Sealed U.S. Court Records Exposed in SolarWinds Breach

January 7, 2021
61 Comments

The ongoing breach affecting thousands of organizations that relied on backdoored products by network software firm SolarWinds may have jeopardized the privacy of countless sealed court documents on file with the U.S. federal court system, according to a memo released Wednesday by the Administrative Office (AO) of the U.S. Courts.

The judicial branch agency said it will be deploying more stringent controls for receiving and storing sensitive documents filed with the federal courts, following a discovery that its own systems were compromised as part of the SolarWinds supply chain attack. That intrusion involved malicious code being surreptitiously inserted into updates shipped by SolarWinds for some 18,000 users of its Orion network management software as far back as March 2020.

“The AO is working with the Department of Homeland Security on a security audit relating to vulnerabilities in the Judiciary’s Case Management/Electronic Case Files system (CM/ECF) that greatly risk compromising highly sensitive non-public documents stored on CM/ECF, particularly sealed filings,” the agency said in a statement published Jan. 6.

“An apparent compromise of the confidentiality of the CM/ECF system due to these discovered vulnerabilities currently is under investigation,” the statement continues. “Due to the nature of the attacks, the review of this matter and its impact is ongoing.”

The AO declined to comment on specific questions about their breach disclosure. But a source close to the investigation told KrebsOnSecurity that the federal court document system was “hit hard,” by the SolarWinds attackers, which multiple U.S. intelligence and law enforcement agencies have attributed as “likely Russian in origin.”

The source said the intruders behind the SolarWinds compromise seeded the AO’s network with a second stage “Teardrop” malware that went beyond the “Sunburst” malicious software update that was opportunistically pushed out to all 18,000 customers using the compromised Orion software. This suggests the attackers were targeting the agency for deeper access to its networks and communications.

The AO’s court document system powers a publicly searchable database called PACER, and the vast majority of the files in PACER are not restricted and are available to anyone willing to pay for the records.

But experts say many other documents stored in the AO’s system are sealed — either temporarily or indefinitely by the courts or parties to a legal matter — and may contain highly sensitive information, including intellectual property and trade secrets, or even the identities of confidential informants.

Nicholas Weaver, a lecturer at the computer science department at University of California, Berkeley, said the court document system doesn’t hold documents that are classified for national security reasons. But he said the system is full of sensitive sealed filings — such as subpoenas for email records and so-called “trap and trace” requests that law enforcement officials use to determine with whom a suspect is communicating via phone, when and for how long.

“This would be a treasure trove for the Russians knowing about a lot of ongoing criminal investigations,” Weaver said. “If the FBI has indicted someone but hasn’t arrested them yet, that’s all under seal. A lot of the investigative tools that get protected under seal are filed very early on in the process, often with gag orders that prevent [the subpoenaed party] from disclosing the request.”

The acknowledgement from the AO comes hours after the U.S. Justice Department said it also was a victim of the SolarWinds intruders, who took control over the department’s Office 365 system and accessed email sent or received from about three percent of DOJ accounts (the department has more than 100,000 employees). Continue reading →

All Aboard the Pequod!

January 7, 2021
206 Comments

Like countless others, I frittered away the better part of Jan. 6 doomscrolling and watching television coverage of the horrifying events unfolding in our nation’s capital, where a mob of President Trump supporters and QAnon conspiracy theorists was incited to lay siege to the U.S. Capitol. For those trying to draw meaning from the experience, might I suggest consulting the literary classic Moby Dick, which simultaneously holds clues about QAnon’s origins and offers an apt allegory about a modern-day Captain Ahab and his ill-fated obsessions.

Many have speculated that Jim Watkins, the administrator of the online message board 8chan (a.k.a. 8kun), and/or his son Ron are in fact “Q,” the anonymous persona behind the QAnon conspiracy theory, which holds that President Trump is secretly working to save the world from a satanic cult of pedophiles and cannibals.

Last year, as I was scrutinizing the computer networks that kept QAnon online, researcher Ron Guilmette pointed out a tantalizing utterance from Watkins the younger which adds tenuous credence to the notion that one or both of them is Q.

We’ll get to how the Great White Whale (the Capitol?) fits into this tale in a moment. But first, a bit of background. A person identified only as “Q” has for years built an impressive following for the far-right conspiracy movement by leaving periodic “Q drops,” cryptic messages that QAnon adherents spend much time and effort trying to decipher and relate to current events.

Researchers who have studied more than 5,000 Q drops are convinced that there are two distinct authors of these coded utterances. The leading theory is that those identities corresponded to the aforementioned father-and-son team responsible for operating 8chan.

Jim Watkins, 56, is the current owner of 8chan, a community perhaps now best known as a forum for violent extremists and mass shooters. Watkins is an American pig farmer based in the Philippines; Ron reportedly resides in Japan.

In the aftermath of back-to-back mass shootings on Aug. 3 and Aug. 4, 2019 in which a manifesto justifying one of the attacks was uploaded to 8chan, Cloudflare stopped providing their content delivery network to 8chan. Several other providers quickly followed suit, leaving 8chan offline for months before it found a haven at a notorious bulletproof hosting facility in Russia.

One reason Q watchers believe Ron and Jim Watkins may share authorship over the Q drops is that while 8chan was offline, the messages from Q ceased. The drops reappeared only months later when 8chan rebranded as 8kun.

CALL ME ISHMAEL

Here’s where the admittedly “Qonspiratorial” clue about the Watkins’ connection to Q comes in. On Aug. 5, 2019, Ron Watkins posted a Twitter message about 8chan’s ostracization which compared the community’s fate to that of the Pequod, the name of the doomed whaling ship in the Herman Melville classic “Moby Dick.”

“If we are still down in a few hours then maybe 8chan will just go clearnet and we can brave DDOS attacks like Ishmael on the Pequod,” Watkins the younger wrote.

Ishmael, the first-person narrator in the novel, is a somewhat disaffected American sailor who decides to try his hand at a whaling ship. Ishmael is a bit of a minor character in the book; very soon into the novel we are introduced to a much more interesting and enigmatic figure — a Polynesian harpooner by the name of Queequeg.

Apart from being a cannibal from the Pacific islands who has devoured many people, Queequeg is a pretty nice guy and shows Ismael the ropes of whaling life. Queequeg is covered head to toe in tattoos, which are described by the narrator as the work of a departed prophet and seer from the cannibal’s home island.

Like so many Q drops, Queequeg’s tattoos tell a mysterious tale, but we never quite learn what that full story is. Indeed, the artist who etched them into Queequeg’s body is long dead, and the cannibal himself can’t seem to explain what it all means.

Ishmael describes Queequeg’s mysterious markings in this passage:

“…a complete theory of the heavens and earth, and a mystical treatise on the art of attaining truth; so that Queequeg in his own proper person was a riddle to unfold; a wondrous work in one volume; but whose mysteries not even himself could read, though his own live heart beat against them; and these mysteries were therefore destined in the end to moulder away with the living parchment whereon they were inscribed, and so be unsolved to the last.” Continue reading →

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Hamas May Be Threat to 8chan, QAnon Online

January 5, 2021
90 Comments

In October 2020, KrebsOnSecurity looked at how a web of sites connected to conspiracy theory movements QAnon and 8chan were being kept online by DDoS-Guard, a dodgy Russian firm that also hosts the official site for the terrorist group Hamas. New research shows DDoS-Guard relies on data centers provided by a U.S.-based publicly traded company, which experts say could be exposed to civil and criminal liabilities as a result of DDoS-Guard’s business with Hamas.

Many of the IP address ranges in in this map of QAnon and 8Chan-related sites — are assigned to VanwaTech. Source: twitter.com/Redrum_of_Crows

Last year’s story examined how a phone call to Oregon-based CNServers was all it took to briefly sideline multiple websites related to 8chan/8kun — a controversial online image board linked to several mass shootings — and QAnon, the far-right conspiracy theory which holds that a cabal of Satanic pedophiles is running a global child sex-trafficking ring and plotting against President Donald Trump.

From that piece:

A large number of 8kun and QAnon-related sites (see map above) are connected to the Web via a single Internet provider in Vancouver, Wash. called VanwaTech (a.k.a. “OrcaTech“). Previous appeals to VanwaTech to disconnect these sites have fallen on deaf ears, as the company’s owner Nick Lim reportedly has been working with 8kun’s administrators to keep the sites online in the name of protecting free speech.

After that story, CNServers and a U.K.-based hosting firm called SpartanHost both cut ties with VanwaTech. Following a brief disconnection, the sites came back online with the help of DDoS-Guard, an Internet company based in Russia. DDoS-Guard is now VanwaTech’s sole connection to the larger Internet.

A review of the several thousand websites hosted by DDoS-Guard is revelatory, as it includes a vast number of phishing sites and domains tied to cybercrime services or forums online.

Replying to requests for comment from a CBSNews reporter following up on my Oct. 2020 story, DDoS-Guard issued a statement saying, “We observe network neutrality and are convinced that any activity not prohibited by law in our country has the right to exist.”

But experts say DDoS-Guard’s business arrangement with a Denver-based publicly traded data center firm could create legal headaches for the latter thanks to the Russian company’s support of Hamas.

In a press release issued in late 2019, DDoS-Guard said its services rely in part on a traffic-scrubbing facility in Los Angeles owned by CoreSite [NYSE:COR], a real estate investment trust which invests in “carrier-neutral data centers and provides colocation and peering services.”

This facilities map published by DDoS-Guard suggests the company’s network actually has at least two points of presence in the United States.

Hamas has long been named by the U.S. Treasury and State departments as a Specially Designated Global Terrorist (SDGT) organization. Under such a designation, any U.S. person or organization that provides money, goods or services to an SDGT entity could face civil and/or criminal prosecution and hefty fines ranging from $250,000 to $1 million per violation. Continue reading →

Happy 11th Birthday, KrebsOnSecurity!

December 29, 2020
68 Comments

Today marks the 11th anniversary of KrebsOnSecurity! Thank you, Dear Readers, for your continued encouragement and support!

With the ongoing disruption to life and livelihood wrought by the Covid-19 pandemic, 2020 has been a fairly horrid year by most accounts. And it’s perhaps fitting that this was also a leap year, piling on an extra day to a solar rotation that most of us probably can’t wait to see in the rearview mirror.

But it was hardly a dull one for computer security news junkies. In almost every category — from epic breaches and ransomware to cybercrime justice and increasingly aggressive phishing and social engineering scams — 2020 was a year that truly went to eleven.

Almost 150 stories here this past year generated nearly 9,000 responses from readers (although about 6 percent of those were on just one story). Thank you all for your thoughtful engagement, wisdom, news tips and support.

I’d like to reprise a note from last year’s anniversary post concerning ads. A good chunk of the loyal readers here are understandably security- and privacy-conscious, and many block advertisements by default — including the ads displayed here.

KrebsOnSecurity does not run third-party ads and has no plans to change that; all of the creatives you see on this site are hosted in-house, are purely image-based, and are vetted first by Yours Truly. Love them or hate ’em, these ads help keep the content at KrebsOnSecurity free to any and all readers. If you’re currently blocking ads here, please consider making an exception for this site.

In case you missed them, some of the most popular feature/enterprise stories on the site this year (in no particular order) included:

The Joys of Owning an ‘OG’ Email Account
Confessions of an ID Theft Kingpin (Part II)
Why and Where You Should Plant Your Flag
Thinking of a Career in Cybersecurity? Read This
Turn on MFA Before Crooks Do it for You
Romanian Skimmer Gang in Mexico Outed by KrebsOnSecurity Stole $1.2 Billion
Who’s Behind the ‘Web Listings’ Mail Scam?
When in Doubt: Hang Up, Look Up, & Call Back
Riding the State Unemployment Fraud Wave
Would You Have Fallen for this Phone Scam?

VMware Flaw a Vector in SolarWinds Breach?

December 18, 2020
142 Comments

U.S. government cybersecurity agencies warned this week that the attackers behind the widespread hacking spree stemming from the compromise at network software firm SolarWinds used weaknesses in other, non-SolarWinds products to attack high-value targets. According to sources, among those was a flaw in software virtualization platform VMware, which the U.S. National Security Agency (NSA) warned on Dec. 7 was being used by Russian hackers to impersonate authorized users on victim networks.

On Dec. 7, 2020, the NSA said “Russian state-sponsored malicious cyber actors are exploiting a vulnerability in VMware Access and VMware Identity Manager products, allowing the actors access to protected data and abusing federated authentication.”

VMware released a software update to plug the security hole (CVE-2020-4006) on Dec. 3, and said it learned about the flaw from the NSA.

The NSA advisory (PDF) came less than 24 hours before cyber incident response firm FireEye said it discovered attackers had broken into its networks and stolen more than 300 proprietary software tools the company developed to help customers secure their networks.

On Dec. 13, FireEye disclosed that the incident was the result of the SolarWinds compromise, which involved malicious code being surreptitiously inserted into updates shipped by SolarWinds for users of its Orion network management software as far back as March 2020.

In its advisory on the VMware vulnerability, the NSA urged patching it “as soon as possible,” specifically encouraging the National Security System, Department of Defense, and defense contractors to make doing so a high priority.

The NSA said that in order to exploit this particular flaw, hackers would already need to have access to a vulnerable VMware device’s management interface — i.e., they would need to be on the target’s internal network (provided the vulnerable VMware interface was not accessible from the Internet). However, the SolarWinds compromise would have provided that internal access nicely.

In response to questions from KrebsOnSecurity, VMware said it has “received no notification or indication that the CVE 2020-4006 was used in conjunction with the SolarWinds supply chain compromise.”

VMware added that while some of its own networks used the vulnerable SolarWinds Orion software, an investigation has so far revealed no evidence of exploitation.

“While we have identified limited instances of the vulnerable SolarWinds Orion software in our environment, our own internal investigation has not revealed any indication of exploitation,” the company said in a statement. “This has also been confirmed by SolarWinds own investigations to date.”

On Dec. 17, DHS’s Cybersecurity and Infrastructure Security Agency (CISA) released a sobering alert on the SolarWinds attack, noting that CISA had evidence of additional access vectors other than the SolarWinds Orion platform.

CISA’s advisory specifically noted that “one of the principal ways the adversary is accomplishing this objective is by compromising the Security Assertion Markup Language (SAML) signing certificate using their escalated Active Directory privileges. Once this is accomplished, the adversary creates unauthorized but valid tokens and presents them to services that trust SAML tokens from the environment. These tokens can then be used to access resources in hosted environments, such as email, for data exfiltration via authorized application programming interfaces (APIs).”

Indeed, the NSA’s Dec. 7 advisory said the hacking activity it saw involving the VMware vulnerability “led to the installation of a web shell and follow-on malicious activity where credentials in the form of SAML authentication assertions were generated and sent to Microsoft Active Directory Federation Services (ADFS), which in turn granted the actors access to protected data.”

Also on Dec. 17, the NSA released a far more detailed advisory explaining how it has seen the VMware vulnerability being used to forge SAML tokens, this time specifically referencing the SolarWinds compromise.

Asked about the potential connection, the NSA said only that “if malicious cyber actors gain initial access to networks through the SolarWinds compromise, the TTPs [tactics, techniques and procedures] noted in our December 17 advisory may be used to forge credentials and maintain persistent access.”

“Our guidance in this advisory helps detect and mitigate against this, no matter the initial access method,” the NSA said.

Continue reading →

Malicious Domain in SolarWinds Hack Turned into ‘Killswitch’

December 16, 2020
88 Comments

A key malicious domain name used to control potentially thousands of computer systems compromised via the months-long breach at network monitoring software vendor SolarWinds was commandeered by security experts and used as a “killswitch” designed to turn the sprawling cybercrime operation against itself, KrebsOnSecurity has learned.

Austin, Texas-based SolarWinds disclosed this week that a compromise of its software update servers earlier this year may have resulted in malicious code being pushed to nearly 18,000 customers of its Orion platform. Many U.S. federal agencies and Fortune 500 firms use(d) Orion to monitor the health of their IT networks.

On Dec. 13, cyber incident response firm FireEye published a detailed writeup on the malware infrastructure used in the SolarWinds compromise, presenting evidence that the Orion software was first compromised back in March 2020. FireEye said hacked networks were seen communicating with a malicious domain name — avsvmcloud[.]com — one of several domains the attackers had set up to control affected systems.

As first reported here on Tuesday, there were signs over the past few days that control over the domain had been transferred to Microsoft. Asked about the changeover, Microsoft referred questions to FireEye and to GoDaddy, the current domain name registrar for the malicious site.

Today, FireEye responded that the domain seizure was part of a collaborative effort to prevent networks that may have been affected by the compromised SolarWinds software update from communicating with the attackers. What’s more, the company said the domain was reconfigured to act as a “killswitch” that would prevent the malware from continuing to operate in some circumstances.

“SUNBURST is the malware that was distributed through SolarWinds software,” FireEye said in a statement shared with KrebsOnSecurity. “As part of FireEye’s analysis of SUNBURST, we identified a killswitch that would prevent SUNBURST from continuing to operate.”

The statement continues:

“Depending on the IP address returned when the malware resolves avsvmcloud[.]com, under certain conditions, the malware would terminate itself and prevent further execution. FireEye collaborated with GoDaddy and Microsoft to deactivate SUNBURST infections.”

“This killswitch will affect new and previous SUNBURST infections by disabling SUNBURST deployments that are still beaconing to avsvmcloud[.]com. However, in the intrusions FireEye has seen, this actor moved quickly to establish additional persistent mechanisms to access to victim networks beyond the SUNBURST backdoor.

This killswitch will not remove the actor from victim networks where they have established other backdoors. However, it will make it more difficult to for the actor to leverage the previously distributed versions of SUNBURST.”

It is likely that given their visibility into and control over the malicious domain, Microsoft, FireEye, GoDaddy and others now have a decent idea which companies may still be struggling with SUNBURST infections.

The killswitch revelations came as security researchers said they’d made progress in decoding SUNBURST’s obfuscated communications methods. Chinese cybersecurity firm RedDrip Team published their findings on Github, saying its decoder tool had identified nearly a hundred suspected victims of the SolarWinds/Orion breach, including universities, governments and high tech companies.

Meanwhile, the potential legal fallout for SolarWinds in the wake of this breach continues to worsen. The Washington Post reported Tuesday that top investors in SolarWinds sold millions of dollars in stock in the days before the intrusion was revealed. SolarWinds’s stock price has fallen more than 20 percent in the past few days. The Post cited former enforcement officials at the U.S. Securities and Exchange Commission (SEC) saying the sales were likely to prompt an insider trading investigation.

SolarWinds Hack Could Affect 18K Customers

December 15, 2020
122 Comments

The still-unfolding breach at network management software firm SolarWinds may have resulted in malicious code being pushed to nearly 18,000 customers, the company said in a legal filing on Monday. Meanwhile, Microsoft should soon have some idea which and how many SolarWinds customers were affected, as it recently took possession of a key domain name used by the intruders to control infected systems.

On Dec. 13, SolarWinds acknowledged that hackers had inserted malware into a service that provided software updates for its Orion platform, a suite of products broadly used across the U.S. federal government and Fortune 500 firms to monitor the health of their IT networks.

In a Dec. 14 filing with the U.S. Securities and Exchange Commission (SEC), SolarWinds said roughly 33,000 of its more than 300,000 customers were Orion customers, and that fewer than 18,000 customers may have had an installation of the Orion product that contained the malicious code. SolarWinds said the intrusion also compromised its Microsoft Office 365 accounts.

The initial breach disclosure from SolarWinds came five days after cybersecurity incident response firm FireEye announced it had suffered an intrusion that resulted in the theft of some 300 proprietary software tools the company provides to clients to help secure their IT operations.

On Dec. 13, FireEye published a detailed writeup on the malware infrastructure used in the SolarWinds compromise, presenting evidence that the Orion software was first compromised back in March 2020. FireEye didn’t explicitly say its own intrusion was the result of the SolarWinds hack, but the company confirmed as much to KrebsOnSecurity earlier today.

Also on Dec. 13, news broke that the SolarWinds hack resulted in attackers reading the email communications at the U.S. Treasury and Commerce departments.

On Dec. 14, Reuters reported the SolarWinds intrusion also had been used to infiltrate computer networks at the U.S. Department of Homeland Security (DHS). That disclosure came less than 24 hours after DHS’s Cybersecurity and Infrastructure Security Agency (CISA) took the unusual step of issuing an emergency directive ordering all federal agencies to immediately disconnect the affected Orion products from their networks.

ANALYSIS

Security experts have been speculating as to the extent of the damage from the SolarWinds hack, combing through details in the FireEye analysis and elsewhere for clues about how many other organizations may have been hit.

And it seems that Microsoft may now be in perhaps the best position to take stock of the carnage. That’s because sometime on Dec. 14, the software giant took control over a key domain name — avsvmcloud[.]com — that was used by the SolarWinds hackers to communicate with systems compromised by the backdoored Orion product updates.

Armed with that access, Microsoft should be able to tell which organizations have IT systems that are still trying to ping the malicious domain. However, because many Internet service providers and affected companies are already blocking systems from accessing that malicious control domain or have disconnected the vulnerable Orion services, Microsoft’s visibility may be somewhat limited.

Microsoft has a long history of working with federal investigators and the U.S. courts to seize control over domains involved in global malware menaces, particularly when those sites are being used primarily to attack Microsoft Windows customers.

Microsoft dodged direct questions about its visibility into the malware control domain, suggesting those queries would be better put to FireEye or GoDaddy (the current domain registrar for the malware control server). But in a response on Twitter, Microsoft spokesperson Jeff Jones seemed to confirm that control of the malicious domain had changed hands. Continue reading →

U.S. Treasury, Commerce Depts. Hacked Through SolarWinds Compromise

December 14, 2020
183 Comments

Communications at the U.S. Treasury and Commerce Departments were reportedly compromised by a supply chain attack on SolarWinds, a security vendor that helps the federal government and a range of Fortune 500 companies monitor the health of their IT networks. Given the breadth of the company’s customer base, experts say the incident may be just the first of many such disclosures.

Some of SolarWinds’ customers. Source: solarwinds.com

According to a Reuters story, hackers believed to be working for Russia have been monitoring internal email traffic at the U.S. Treasury and Commerce departments. Reuters reports the attackers were able to surreptitiously tamper with updates released by SolarWinds for its Orion platform, a suite of network management tools.

In a security advisory, Austin, Texas based SolarWinds acknowledged its systems “experienced a highly sophisticated, manual supply chain attack on SolarWinds Orion Platform software builds for versions 2019.4 HF 5 through 2020.2.1, released between March 2020 and June 2020.”

In response to the intrusions at Treasury and Commerce, the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA) took the unusual step of issuing an emergency directive ordering all federal agencies to immediately disconnect the affected Orion products from their networks.

“Treat all hosts monitored by the SolarWinds Orion monitoring software as compromised by threat actors and assume that further persistence mechanisms have been deployed,” CISA advised.

A blog post by Microsoft says the attackers were able to add malicious code to software updates provided by SolarWinds for Orion users. “This results in the attacker gaining a foothold in the network, which the attacker can use to gain elevated credentials,” Microsoft wrote.

From there, the attackers would be able to forge single sign-on tokens that impersonate any of the organization’s existing users and accounts, including highly privileged accounts on the network.

“Using highly privileged accounts acquired through the technique above or other means, attackers may add their own credentials to existing application service principals, enabling them to call APIs with the permission assigned to that application,” Microsoft explained.

Malicious code added to an Orion software update may have gone undetected by antivirus software and other security tools on host systems thanks in part to guidance from SolarWinds itself. In this support advisory, SolarWinds says its products may not work properly unless their file directories are exempted from antivirus scans and group policy object restrictions. Continue reading →

Payment Processing Giant TSYS: Ransomware Incident “Immaterial” to Company

December 10, 2020
19 Comments

Payment card processing giant TSYS suffered a ransomware attack earlier this month. Since then reams of data stolen from the company have been posted online, with the attackers promising to publish more in the coming days. But the company says the malware did not jeopardize card data, and that the incident was limited to administrative areas of its business.

Headquartered in Columbus, Ga., Total System Services Inc. (TSYS) is the third-largest third-party payment processor for financial institutions in North America, and a major processor in Europe.

TSYS provides payment processing services, merchant services and other payment solutions, including prepaid debit cards and payroll cards. In 2019, TSYS was acquired by financial services firm Global Payments Inc. [NYSE:GPN].

On December 8, the cybercriminal gang responsible for deploying the Conti ransomware strain (also known as “Ryuk“) published more than 10 gigabytes of data that it claimed to have removed from TSYS’s networks.

Conti is one of several cybercriminal groups that maintains a blog which publishes data stolen from victims in a bid to force the negotiation of ransom payments. The gang claims the data published so far represents just 15 percent of the information it offloaded from TSYS before detonating its ransomware inside the company.

In a written response to requests for comment, TSYS said the attack did not affect systems that handle payment card processing.

“We experienced a ransomware attack involving systems that support certain corporate back office functions of a legacy TSYS merchant business,” TSYS said. “We immediately contained the suspicious activity and the business is operating normally.” Continue reading →

Patch Tuesday, Good Riddance 2020 Edition

December 8, 2020
29 Comments

Microsoft today issued its final batch of security updates for Windows PCs in 2020, ending the year with a relatively light patch load. Nine of the 58 security vulnerabilities addressed this month earned Microsoft’s most-dire “critical” label, meaning they can be abused by malware or miscreants to seize remote control over PCs without any help from users.

Mercifully, it does not appear that any of the flaws fixed this month are being actively exploited, nor have any them been detailed publicly prior to today.

The critical bits reside in updates for Microsoft Exchange Server, Sharepoint Server, and Windows 10 and Server 2016 systems. Additionally, Microsoft released an advisory on how to minimize the risk from a DNS spoofing weakness in Windows Server 2008 through 2019.

Some of the sub-critical “important” flaws addressed this month also probably deserve prompt patching in enterprise environments, including a trio of updates tackling security issues with Microsoft Office.

“Given the speed with which attackers often weaponize Microsoft Office vulnerabilities, these should be prioritized in patching,” said Allan Liska, senior security architect at Recorded Future. “The vulnerabilities, if exploited, would allow an attacker to execute arbitrary code on a victim’s machine. These vulnerabilities affect Microsoft Excel 2013 through 2019, Microsoft 365 32 and 64 bit versions, Microsoft Office 2019 32 and 64 bit versions, and Microsoft Excel for Mac 2019.”

We also learned this week that Redmond quietly addressed a scary “zero-click” vulnerability in its Microsoft Teams platform that would have let anyone execute code of their choosing just by sending the target a specially-crafted chat message to a Teams users. The bug was cross-platform, meaning it could also have been used to deliver malicious code to people using Teams on non-Windows devices. Continue reading →