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Archive for the ‘Breaches And Incidents’ Category

Security researchers warn that a significant number of WordPress websites have been compromised recently as part of what looks to be a money-generating affiliate scheme. The header.php template files are being injected with obfuscated JavaScript code.

“Late last week, I noticed something of a surge in reports of a particular threat: hoards of legitimate pages were being injected with a malicious JavaScript, pro-actively blocked as Mal/ObfJS-H. Thus far, the common link between the affected sites appears to be Wordpress. One user report suggests that the malicious script is being added to the header.php template script used by Wordpress,” Fraser Howard, principal virus researcher at Sophos, writes on the company’s blog.

The obfuscated script is inserted right after the tag and its purpose is to load additional content via an IFrame and to pass visitors through a series of silent redirects. One of these 302 redirects pass the affiliate account of the attacker to a remote script, probably for remuneration purposes.

According to Mr. Howard’s analysis, a cookie for a domain name rich-traffic.com is set in the visitors’ browsers, this site being a Russian affiliate network allowing users to sell or to buy IFrame traffic. “We sell only high quality iframe traffic for your various needs!” is written on the main page. Apparently, this offer refers to huge amounts of unique visitors spread across a wide variety of countries.

The issue of header.php files being modified without authorization has also been discussed in the support forums over at wordpress.org, with users suggesting that compromised FTP accounts might be the cause. This is consistent with the Sophos researcher’s conclusion, who writes that, “In this particular attack however, an out of date Wordpress installation does not appear to be the root cause – many of the sites I checked, appear to be running the latest available version (2.9.1 at time of writing).”

It is worth noting that TechCrunch, one of the most popular technology blogs on the Internet, has recently faced several attacks, which resulted in its home page being altered. At least in one particular attack, the header.php file was modified to include a rogue message.

Credit: Softpedia.com News

Two Firefox add-ons available for months on Mozilla’s website infected users with malware that stole passwords and opened a backdoor on Windows machines, the open-source browser maker has confirmed.

The add-ons, available on an experimental section of Mozilla’s official add-on download site carried trojans that have been detected since 2008 by commercial anti-virus products. And yet they weren’t removed until late January and earlier this week because a scanning tool used to vet add-ons during upload failed to catch the malicious files.

“If a user installs one of these infected add-ons, the trojan would be executed when Firefox starts and the host computer would be infected by the trojan,” a note on Mozilla’s add-on blog stated. “Uninstalling these add-ons does not remove the trojan from a user’s system.”

Instead, infected users will need to thoroughly scan their machines with an anti-virus program. Or better yet, use multiple scanners, or simply reinstall the operating system to be on the safe side.

This isn’t the first time Mozilla has served malware-laced add-ons to its loyal base of users. In May 2008, a Vietnamese language pack for Firefox 2 contained a viral infection that resulted in users seeing unwanted ads. The add-on was downloaded almost 17,000 times before it was pulled.

In the most recent case, version 4 of the Sothink Web Video Downloader add-on installed a password sniffer dubbed Win32.LdPinch.gen and was downloaded about 4,000 times between February 2008 and May 2008. A separate add-on called Master Filer was laced with a backdoor trojan known as Win32.Bifrose that was downloaded 600 times between September 2009 and January of this year.

Mozilla removed Master Filer on January 25 and nixed Sothink on Tuesday.

The blog post said Mozilla added two new scanners to its validation chain. It was this change that allowed the organization to detect version 4 of the Sothink Web Video Downloader.

Versions greater the 4.0 of the video downloader add-on were not infected, Mozilla’s blog post stated. Both infections affected only Windows users of the open-source browser.

Credit: The Register

Over thirty websites of various Representatives and House Committees fell victim to mass defacement yesterday. The incident occurred shortly after President Obama gave his State of the Union address.

The attack seems to be politically motivated as it contained an offensive anti-Obama message. All affected websites are from within the house.gov domain and most of them served House Representatives. However, a few, such as gop.cha.house.gov, republicans.financialservices.house.gov, republicans.oversight.house.gov or resourcescommittee.house.gov, correspond to House committees.

According to Web defacement archive Zone-H, the Red Eye Crew is a prominent hacking group responsible for more than 45,000 defacements in 2009 alone. Around 2,000 of the affected websites are listed as special, meaning they belong to governments, military organizations or important corporations.

Determining a specific point of entry for these attacks without any insider knowledge is hard. However, security researchers from Praetorian Security Group determined that all compromised websites use the Joomla content management system. “But not all of the Joomla CMS web sites [on the same server] are affected. This might indicate that it is a Joomla component that is to blame, however that is just speculation,” they write.

It is worth noting that a significant number of websites within the house.gov domain were defaced last August by a different group. At the time, there was information to suggest that the compromise was the result of default passwords that were left unchanged.

“Unfortunately we won’t know that until someone who manages house.gov provides some details. Server access seems unlikely, because while the sites we checked are hosted on dcserver1.house.gov, not every site hosted on that server is defaced (example congressman Joe Sestak’s web site was fine). The sites are not redirecting anywhere,” the Praetorian Security Group experts conclude.

Credit: Softpedia.com News

Popular technology site TechCrunch was hit by hackers late on Monday, leaving the site temporarily unavailable.

A notice on TechCrunch.com’s front page on Tuesday morning explains that “TechCrunch.com was compromised by a security exploit”. Access to the site’s story archive has been suspended leaving a two para notice on the hack as the only content visible on the site.

Hackers defaced the front page of the site with a message (recorded by Mikko Hypponen of F-Secure) apparently abusing site admins and including a link to a pornographic content and warez linking website.

The problems began for TechCrunch at around 10:30 pm PST on Monday when unknown hackers modified its home page to only display the word “hi.” The page was later changed to read “We’ll be back shortly,” suggesting that webmasters regained control of the website.

After a while, the site was hacked again and a link called “rapidshare downloads” appeared on the home page. The link actually pointed to DupeDB, a known warez website and was subsequently replaced by a “We’ll be back soon” message.

Hackers took over TechCrunch for a third time and left one offensive message accompanied by a link to the illegal content distribution site mentioned before. A final message from staff after this attack was also repelled, saying “Earlier tonight techcrunch.com was compromised by a security exploit. We’re working to identify the exploit and will bring the site back online shortly.”

Specific technical details regarding the incident are lacking, but a DNS hijacking attack similar to those experienced by Twitter and Baidu is out of the question. According to some sources cited by Praetorian Prefect, TechCrunch was using WordPress 2.8.4 at the time of the incident and 2.9.1 after. This apparent platform upgrade suggests that a WordPress vulnerability might have been exploited.

This defacement was removed by site admins who are in the process of identifying the exploit involved in the hack, securing systems, and bringing TechCrunch back online.

The motives or perpetrators of the attack remain unclear but the timing - a day before Apple’s much anticipated iTab launch in San Francisco - could hardly be worse.

TechCrunch returned to business by Tuesday lunchtime. The site has published a story on the attack, which is still under investigation. Hackers redirected traffic as well as leaving a defacement, TechCrunch explains.

Update (Jan. 27): TechCrunch has been hit by potty-mouth hackers for the second time in 24 hours. The second hack features a foul-mouth rant aimed against site founder Michael Arrington. It also includes a link to the same online smut and warez-peddling Torrents site “promoted” via the previous attack.

Credit: The Register, Softpedia.com News

Ladbrokes is investigating the loss of thousands of customer details from one of its databases, but is reassuring gamblers that the information did not include bank details or passwords.

The Mail on Sunday was approached by an Australian man named Daniel who claimed to have access to Ladbrokes’ database of 4.5 million customers. Daniel gave the paper 10,000 customer files to show he was serious.

The man, who claimed to represent a Melbourne-based firm, said he had worked for Ladbrokes as a security consultant two years before. He said he’d been given the information by a relatively junior member of staff.

Ladbrokes said passing on the information was a criminal offense and it was working with police and the Information Commissioner’s Office to identify the culprit.

Ladbrokes said: “We are in the process of contacting the limited number of customers affected by this incident to apologise and to reassure them that the data in question does not include passwords to access customer accounts or any customer banking details.”

The Information Commissioner’s Office thanked the paper for bringing the breach to its attention. The ICO said the story showed the need for prison sentences for those convicted of trading in private data.

Credit: The Register

Domestic appliance manufacturer Whirlpool has come under fire for failing to clean up a malware infection on one of its sites, months after it was notified of a problem by UK anti-virus firm Sophos.

Sophos tried for months to clean-up its Kitchenaid.com website, without success, before going public on the problem on Friday. The kitchen utensil selling site remains infected with the Badsrc-C (AKA Asprox) strain of malware five months after a Sophos customer reported a problem, which the security firm forwarded to the white goods firm.

The malicious script points towards nowhere at present, so there isn’t an immediate risk. The problem is that this may change at any time, hence the need for remedial action that Whirlpool seems reluctant to take.

“I and several of my colleagues have been trying to talk to contacts at KitchenAid and Whirlpool to inform them of the issue and offer assistance. We have consistently hit brick walls,” reports senior Sophos threat analyst Paul Baccas.

Whirlpool’s lack of action is symptomatic of a wider problem. Reports of malware problems on websites are hard even for security firms to send to the right person, are often disregarded and sometimes met with indignation, Baccas writes.

The Asprox strain of malware still lingering on Kitchenaid.com’s website has been linked to phishing spam. SQL injection attacks on vulnerable website have been a preferred method for spreading malware.

Credit: The Register

Board.ie, the most popular forum in Ireland with millions of unique visitors each month, suffered a serious security breach yesterday. As a precaution, the website was taken offline and a password reset was triggered for all registered users.

“Today, Thursday 21 Jan 2010 at 11:20 GMT the Boards.ie database was attacked by a source external to Ireland. […] In this attack, part of the database which includes our members’ usernames, email addresses and obfuscated passwords was accessed. While our investigations indicate that individual user accounts are not in danger we have taken the step of changing all user passwords,” an official announcement reads.

The website administration has been remarkably opened about this incident and seems to treat it very responsibly. It immediately contacted the Gardai (Irish National Police) and the Data Protection Commissioner. No details regarding the specific attack method or origin have been released, as the investigation is in progress.

An independent security consultancy company has also been asked to advise regarding incident response procedure. “Like all large sites we are regularly the target for disruption and take continual actions to proactively protect your data. This particular attack was completely unprecedented despite our rigorous security measures and while we have no idea if this data will be used for any malicious reasons, we felt it vital to tell you this immediately,” the admins write.

The board.ie community website is built using the widely popular vBulletin forum software. Because of the security features implemented on the platform, user passwords were not stored in plain text inside the database. Even so, a decision to have them reset was taken as a precaution.

When the site will be restored, users will have to request new passwords manually. In order to prove their identity, they are required to have access to the e-mail address associated with the account. Admins are still working on an alternative method for cases where users can no longer access the e-mail that was used to register their account with.

The origins of the boards.ie forum date back to 1998, but the site has existed under the current name since 2000. It has over 220,000 registered members who communicate with each other on a variety of topics that touch on all aspects of life.

Credit: Softpedia.com News

The University of Exeter in South West of England experienced serious problems with its computer network earlier this week due to a virus outbreak. Systems running Microsoft Windows Vista with Service Pack 2 seem to have been particularly affected by the unnamed malware.

The problems started on Monday when a computer virus was introduced onto the network. “Experience of dealing with data corrupting viruses elsewhere indicates that it is essential to shut down the network ASAP to avoid so many machines and files being corrupted that it takes weeks to recover. Therefore, although this is a PC rather than a network problem, we had to shut down the network to isolate the virus,” announced David Allen, the university’s registrar and deputy chief executive.

The exact name of the virus has not been disclosed, but ZDNet cites insider sources according to which, it exploits the vulnerability described in Microsoft’s MS09-050 Security Bulletin. “This is a completely new virus and we are the only organisation in the world to experience it. None of the mainstream virus software suppliers have seen this virus, and as such, there is no fix,” a leaked internal e-mail from the IT department allegedly reads.

Mr. Allen also pointed out that a security expert had been called on site to assist with the cleaning efforts. Apparently, this malware has only been detected on computers running Windows Vista and the specialized staff plans to check all such systems. This would suggest that the “virus” can spread from one computer to another, which would technically make it a computer worm.

“University campuses are, of course, complex beasts and the IT teams who secure them can have a tough job. The problem is compounded by having a massive userbase of students who may plug their own devices into the network, or may show little care for the security of a communal computer and put it at unnecessary risk,” notes Graham Cluley, senior technology consultant at antivirus vendor Sophos.

The network is slowly being brought back online, beginning with buildings that do not use Windows Vista computers. Several services such as Outlook Web Access and the MyExeter Web portal remain functional, but other network-dependent equipment like VoIP telephones or interactive teaching boards are unusable.

The University of Exeter has almost 16,000 students and three campuses, two in Exeter and one in Cornwall. The Cornwall campus is shared with the University College Falmouth and was isolated from the affected network immediately after the threat was discovered.

Credit: Softpedia.com News

Network Solutions announced that several hundred websites hosted on its infrastructure fell victim in a mass defacement attack during the past several days. Preliminary findings suggest that a remote file inclusion technique was used to compromise several of the company’s Unix servers.

Network Solutions is one of the top five Internet domain name registrars, managing around 6,5 million domains as of January 2009. Apart from its successful domain registration business, the company also offers other services such as Web hosting, ecommerce or online marketing solutions.

The problems began for Network Solutions last weekend when several customers reported their websites being defaced by hacktivists. Most of the attacked websites had anti-Israel messages posted on their home page and displayed violent images.

At first, the Internet firm thought a vulnerability in a Web application shared by these websites might be the culprit. “We are running a scan to see if we can proactively determine if any hosting accounts are impacted. Proponents of malware and hacking commonly look for websites with vulnerabilities. These include weak passwords, third party applications that aren’t up to date or sometimes weakness could emanate from lack of updated anti-virus software on PCs,” Shashi Bellamkonda, the company’s director for social/new media strategy, wrote on Sunday.

However, it appears that these attacks were made possible by the configuration of the hosting servers themselves, which opened a remote file inclusion (RFI) weakness. Such vulnerabilities stem from improper validation of values being passed to the $_GET of $_POST variables under certain PHP configurations.

“Hackers were able to add a file displaying illegitimate content on top of the customer website content. This was an issue on multiple servers and unknown intruders were able to get through by using a file inclusion technique. There was no danger to any personally identifiable or secure information,” Mr. Bellamkonda announced yesterday in an update on the company’s blog.

Network Solutions is working with affected customers to restore their websites and is closely monitoring the threat. It has yet to decide if the best course of action is to make permanent changes to the configuration of its servers, a decision that might affect the functionality of existent websites.

Credit: Softpedia.com News

Microsoft published an advisory today about a critical security vulnerability in all versions of Internet Explorer (apart from version 5). While all versions of Internet Explorer are affected, the risk for everyone running Internet Explorer 8 is lower since it has DEP (Data Execution Prevention) enabled by default.

According to McAfee, hackers who breached the defenses of Google, Adobe Systems and at least 32 other companies used this vulnerability to carry out at least some of the attacks.

The previously unknown flaw in the IE browser was probably just one of the vectors used in the attacks, McAfee CTO George Kurtz wrote in a blog post. Using a sophisticated spear-phishing campaign, the perpetrators included malicious links exploiting the bug in emails and instant messages sent to employees from at least three of the targeted companies.

Contrary to previous speculation, there was no evidence vulnerabilities in Adobe’s Reader or Acrobat applications were used in any of the attacks, Kurtz said. In its own statement, adobe concurred, saying researchers “have not been able to obtain any evidence to indicate that Adobe Reader or other Adobe technologies were used as the attack vector in this incident.”

Kurtz said his findings were based on malware samples taken from “three to five” of the targeted companies and he stressed that other zero days or exploits could have been used against other victims.

“In our investigation we discovered that one of the malware samples involved in this broad attack exploits a new, not publicly known vulnerability in Microsoft Internet Explorer,” Kurtz wrote. “Our investigation has shown that Internet explorer is vulnerable on all of Microsoft’s most recent operating system releases, including Windows 7.”

Shortly after the report, Microsoft confirmed the new IE vulnerability was “one of the vectors used in targeted and sophisticated attacks against Google and possibly other corporate networks.” A company statement said the attacks were carried out against version 6 of the widely used browser and suggested users protect themselves by enabling security features that have been added to successor versions.

McAfee’s report is the latest to shed light on one of the most significant cyberattacks in years. Google first disclosed the “highly sophisticated and targeted attack” on Tuesday, saying it originated in China and targeted its intellectual property. It added that 20 other companies suffered similar assaults, a number that independent researchers soon raised to 34. So far, only Google and Adobe have been identified as victims.

Yahoo, Symantec, Northrop Grumman and Dow Chemical have also been penetrated according to The Washington Post, citing unnamed “congressional and industry sources.”

The malware that McAfee researchers analyzed was sent to a highly select group of employees of a handful of companies that Kurtz declined to identify.

“This wasn’t something that got blasted to 300,000 people in a corporation,” Kurtz said in an interview with The Register. “It was really targeted at senior technology leaders that had access to core pieces of intellectual property, source code, et cetera.”

Kurtz has dubbed the attack “Aurora,” a reference to the filepath on the attacker’s machine that showed up in some of the malware code McAfee researchers analyzed. They believe that is the name the attackers gave to the operation. There was nothing in the binaries that indicated either way whether the code writers spoke Cantonese or Mandarin or were located in China.

The IE vulnerability stems from an invalid pointer reference that when exploited allows an attacker to execute malicious shell code on underlying machines. The malware caused exploited machines to download further malicious scripts that installed a backdoor. The machines then connected to command and control channels that were hosted on servers that resided in the US and Taiwan.

A security feature known as data execution prevention, which prevents data loaded into memory from being executed, will block the particular exploits McAfee has observed. But Kurtz warned the vulnerability exists in all versions of IE except for IE 5.01, service pack 4, and that it would be possible for attackers to work around the protection.

In an advisory, Microsoft recommended people use DEP, which by default is enabled in IE 8 but must be turned on in prior versions. The statement also advised users on Vista and later versions of Windows to run IE in protected mode. The advisory didn’t say when an update would be released that patches the vulnerability.

Credit: The Register, SANS ISC