Posts Tagged: wordpress

Apr 15

FBI Warns of Fake Govt Sites, ISIS Defacements

The Federal Bureau of Investigation (FBI) is warning that individuals sympathetic to the Islamic State of Iraq and al-Shams (ISIS) are mass-defacing Websites using known vulnerabilities in WordPress. The FBI also issued an alert advising that criminals are hosting fraudulent government Web sites in a bid to collect personal and financial information from unwitting Web searchers.

fbilogoAccording to the FBI, ISIS sympathizers are targeting WordPress Web sites and the communication platforms of news organizations, commercial entities, religious institutions, federal/state/local governments, foreign governments, and a variety of other domestic and international sites. The agency said the attackers are mainly exploiting known flaws in WordPress plug-ins for which security updates are already available.

The public service announcement (PSA) coincides with a less public alert that the FBI released to its InfraGard members, a partnership between the FBI and private industry partners. That alert noted that several extremist hacking groups indicated they would participate in an operation dubbed #OpIsrael, which will target Israeli and Jewish Web sites to coincide with Holocaust Remembrance Day (Apr .15-16).

“The FBI assesses members of at least two extremist hacking groups are currently recruiting participants for the second anniversary of the operation, which started on 7 April 2013, and coincides with Holocaust Remembrance Day,” the InfraGard alert notes. “These groups, typically located in the Middle East and North Africa, routinely conduct pro-extremist, anti-Israeli, and anti-Western cyber operations.”

Experts say there may be no actual relationship between these defacements and Islamist militants. In any case, if you run a Web site powered by WordPress — or any other content management system (CMS) — please take a few moments today to ensure that the CMS itself is up-to-date with the latest patches, and apply all available fixes for any installed plug-ins. Continue reading →

Mar 14

Blogs of War: Don’t Be Cannon Fodder

On Wednesday, KrebsOnSecurity was hit with a fairly large attack which leveraged a feature in more than 42,000 blogs running the popular WordPress content management system (this blog runs on WordPress). This post is an effort to spread the word to other WordPress users to ensure their blogs aren’t used in attacks going forward.

armyAt issue is the “pingback” function, a feature built into WordPress and plenty of other CMS tools that is designed to notify (or ping) a site that you linked to their content. Unfortunately, like most things useful on the Web, the parasites and lowlifes of the world are turning pingbacks into a feature to be disabled, lest it be used to attack others.

And that is exactly what’s going on. Earlier this week, Web site security firm Sucuri Security warned that it has seen attackers abusing the pingback function built into more than 160,000 WordPress blogs to launch crippling attacks against other sites.

Continue reading →

Apr 13

Brute Force Attacks Build WordPress Botnet

Security experts are warning that an escalating series of online attacks designed to break into poorly-secured WordPress blogs is fueling the growth of an unusually powerful botnet currently made up of more than 90,000 Web servers.



Over the past week, analysts from a variety of security and networking firms have tracked an alarming uptick in so-called “brute force” password-guessing attacks against Web sites powered by WordPress, perhaps the most popular content management system in use today (this blog also runs WordPress).

According to Web site security firm Incapsula, those responsible for this crime campaign are scanning the Internet for WordPress installations, and then attempting to log in to the administrative console at these sites using a custom list of approximately 1,000 of the most commonly-used username and password combinations.

Incapsula co-founder Marc Gaffan told KrebsOnSecurity that infected sites will be seeded with a backdoor the lets the attackers control the site remotely (the backdoors persist regardless of whether the legitimate site owner subsequently changes his password). The infected sites then are conscripted into the attacking server botnet, and forced to launch password-guessing attacks against other sites running WordPress.

Gaffan said the traffic being generated by all this activity is wreaking havoc for some Web hosting firms.

“It’s hurting the service providers the most, not just with incoming traffic,” Gaffan said. “But as soon as those servers get hacked, they are now bombarding other servers with attack traffic. We’re talking about Web servers, not home PCs. PCs maybe connected to the Internet with a 10 megabit or 20 megabit line, but the best hosting providers have essentially unlimited Internet bandwidth. We think they’re building an army of zombies, big servers to bombard other targets for a bigger cause down the road.”

Indeed, this was the message driven home Thursday in a blog post from Houston, Texas based HostGator, one of the largest hosting providers in the United States. The company’s data suggests that the botnet of infected WordPress installations now includes more than 90,000 compromised sites.

Continue reading →

Feb 11

Adobe, Microsoft, WordPress Issue Security Fixes

Talk about Patch Tuesday on steroids! Adobe, Microsoft and WordPress all issued security updates for their products yesterday. In addition, security vendor Tipping Point released advisories detailing 21 unpatched vulnerabilities in products made by CA, EMC, HP, Novell and SCO.

Microsoft’s bundle includes a dozen updates addressing at least 22 security flaws in its Windows operating system and other software. Five of the vulnerabilities earned a “critical” rating, Redmond’s most serious. Six of the Windows flaws fixed in today’s release have been public for some time, although security experts at Symantec say they’re only aware of one of the flaws being actively exploited in the wild — a bug in the way Internet Explorer handles cascading style sheets. Updates are available through Windows Update or Automatic Update.

Microsoft also issued an update that changes the default behavior in Windows when users insert a removable storage device, such as a USB or thumb drive. This update effectively disables “autorun,” a feature of Windows that has been a major vector for malware over the years. Microsoft released this same update in February 2009, but it offered it as an optional patch. The only thing different about the update this time is that it is being offered automatically to users who patch through Windows Update or Automatic Update.

Update, Feb. 18, 11:56 a.m. ET: As F-Secure notes in a useful blog post, Microsoft has once again failed to disable auto-run, because this update is not offered by default, as Microsoft previously indicated.

Original story:

Adobe released an update for its Acrobat and free PDF Reader software that that fixes at least 29 security problems with these products. Adobe is urging users of Adobe Reader X (10.0) and earlier versions for Windows and Macintosh to update to Adobe Reader X (10.0.1), available now. Adobe says that an update to fix these flaws in UNIX installations of its products is expected to be available by the week of February 28, 2011.

Continue reading →

Apr 10

Hundreds of WordPress Blogs Hit by ‘’ Hack

A large number of bloggers using WordPress are reporting that their sites recently were hacked and are redirecting visitors to a page that tries to install malicious software.

According to multiple postings on the WordPress user forum and other blogs, the attack doesn’t modify or create files, but rather appears to inject a Web address — “” — directly into the target site’s database, so that any attempts to access the hacked site redirects the visitor to Worse yet, because of the way the attack is carried out, victim site owners are at least temporarily locked out of accessing their blogs from the WordPress interface.

It’s not clear yet whether the point of compromise is a WordPress vulnerability (users of the latest, patched version appear to be most affected), a malicious WordPress plugin, or if a common service provider may be the culprit. However, nearly every site owner affected so far reports that Network Solutions is their current Web hosting provider.

Network Solutions spokeswoman Susan Wade said the company is investigating the attacks, and that the company believes the problem may be related to a rogue WordPress plugin. Wade added that the attacks weren’t limited to just Network Solutions customers (although the company hasn’t supplied the author with any evidence to support that claim yet).

Continue reading →