Firefox 2 Browser Struck by Password Flaw
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Mozilla's Firefox 2.0 has long been considered a safer Web browser than Microsoft's Internet Explorer, but a new flaw in the Firefox Password Manager, which lets users store usernames and passwords for trusted Web sites, could let hackers steal their login data.
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Before the sun set on Microsoft&#39;s Patch Tuesday this month, security firm Secunia discovered a vulnerability in Firefox that malicious hackers could exploit to compromise a user&#39;s system. Here&#39;s the catch: Exploiting the bug depends on interaction between Mozilla&#39;s browser and Microsoft&#39;s Internet Explorer.
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Mozilla is working to fix a browser flaw that could give attackers unauthorized access to data on a victim&#39;s machine.The problem is similar to other&#160;data leakage&#160;flaws found in the open-source browser, according to researcher Gerry Eisenhaur, who first reported the problem on Saturday.Eisenhaur has posted sample code that reads the contents of a Mozilla Thunderbird preferences file, but he believes that attackers could get access to more information with variations on his attack. &quot;It&#39;s possible to load any JavaScript file on a victim&#39;s machine,&quot; he wrote in his blog posting. &quot;This looks very interesting and may have bigger potential, but for now, it&#39;s just another information disclosure [flaw].&quot;&quot;It could become something more if there was an application that stored sensitive data inside JavaScript files,&quot; he said via instant message. &quot;Some plugins have been known to store usernames and passwords.&quot;&quot;Its also just a powerful way to do recon,&quot; he added.Hackers have discovered a number of flaws in recent months that take advantage of the way that browsers pass information between different components within the Windows operating system. Some of these URI (Uniform Resource Identifier) protocol handler flaws have led to serious security problems for both Firefox and Internet Explorer.This latest flaw affects only certain Firefox add-ons, such as the Download Statusbar or Greasemonkey, which store scripts in a fashion that lets them be discovered on the hard drive, said Window Snyder, Mozilla&#39;s security chief in a Wednesday blog posting.Firefox is investigating the issue and has rated it as a low-severity problem, she said.
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Blog: Recently patched browser from Apple springs another leak.
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Take heart, Internet Explorer users. Now it appears that virtually every Internet browser program - not just yours - poses a security risk.
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(InfoWorld) - Makers of some of the most popular extension software used by the Firefox browser are not doing enough to secure their software, a security researcher said Wednesday. The problem is that many widely used Firefox extensions, including toolbars from Google, Yahoo, and AOL, do not use secure connections to update themselves, according to Christopher Soghoian, a security researcher who blogged about the issue on Wednesday. Soghoian is best known as the researcher who attracted the attention of the FBI late last year after publishing a tool that could be used to print fake boarding passes. The Indiana University doctoral student discovered the Firefox issue last month while examining network traffic on his computer. He noticed that many of the most popular Firefox extensions are not hosted on servers that use the SSL Web protocol. SSL Web sites, which begin with "https://," use digital certificates to provide users with some level of assurance that they're not connecting with a fake server. Although the corporation behind Firefox, Mozilla, hosts the majority of Firefox extensions on its own SSL-enabled Web site, it is common for commercial extension-makers like Google to host their software on an unsecured site, Soghoian said in an interview. This leaves users vulnerable to a "man-in-the middle" attack, where Firefox could be tricked into downloading malicious software from a site it mistakenly thought was hosting an extension. It wouldn't be easy for an attacker to pull this off, however. In one scenario, the hacker would set up a malicious wireless access point in a public area where people are using wireless connections. He could then redirect extension update traffic to a malicious computer. "An attacker who sets up a wireless access point can then infect anyone who connects to it," Soghoian said. The Del.icio.us Extension, Facebook Toolbar, Ask.com Toolbar, LinkedIn Browser Toolbar, Netcraft Anti-Phishing Toolbar, and PhishTank SiteChecker are also vulnerable to this issue, Soghoian said. Though Soghoian said Firefox users should avoid extensions that are not from the secure Firefox add-ons site, not all security researchers see this as a major issue. "It's just yet another vulnerable design among billions,"said Gadi Evron, security evangelist for Beyond Security. "I don't see it as that critical. There is no inherent vulnerability, but it does make the over-whole design weaker, and that should probably be addressed" Evron said it was "silly" that sites weren't using SSL for these extensions. Soghoian said he notified Google, Yahoo, and Facebook of the issue in mid-April, but nobody had addressed the issue as of Wednesday. Just hours after Soghoian went public with his findings, Google said it would "soon" have a fix for the problem. It's common for Web developers to ignore security in the rush to push out new and cool features, Soghoian said. "Your average Web 2.0 developer doesn't learn about security," he said. "Google has a spectacular security team ... my suspicion is that one hand wasn't talking to the other."
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A flaw in the way Firefox handles log-ons could be used by identity thieves to fool users into disclosing passwords, security researcher Aviv Raff said yesterday.
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(InfoWorld) - A flaw in Mozilla Corp.'s Firefox browser makes it easy for cybercriminals to steal user information on Web sites where users create their own pages, such as MySpace.com. The flaw lies in Firefox's Password Manager software, which can be tricked into sending password information to an attacker's Web site, said Robert Chapin, president of Chapin Information Services Inc. For this attack to work, attackers need to be able to create HTML (Hypertext Markup Language) forms on the Web site, something that is allowed on blogging and social networking sites. The attack was used in aÂ MySpace phishing attack reported in late October. In that attack, users registered a MySpace account named login_home_index_html and used it to host a fake log-in page that exploited the flaw. This page sent MySpace username and password information to another Web site, and MySpace users who visited the page using Firefox could have easily had their information compromised, said Chapin. Firefox developers rate this bug critical, according to an entry in the project's Bugzilla database. The flaw arises because Firefox's Password Manager does not perform a thorough enough check when it is deciding whether to send password information, and then does not ensure that password information is being sent to the server that requested it, Chapin said. In the MySpace attack, for example, Firefox would check to see if the form was coming from the MySpace.com domain, but did not make sure that the password information was being sent back to a MySpace server. "From a programming point of view, this is almost like a typo," he said. "Ironically I think that's why it hasn't been discovered until now. It was just way too obvious." Chapin has posted an analysis of this type of attack, which he has dubbed a Reverse Cross-Site Request, as well as a demonstration of how it works . Microsoft Corp.'s Internet Explorer (IE) is also susceptible to these type of attacks because, like Firefox, it does not ensure that password information is being sent to the same server that requests it, Chapin said. But IE is less likely to be tricked because it does a more thorough job in checking to see where the log-in form is coming from before it automatically submits password and user information, he added. Â
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In brief Exploit circulating for unpatched vuln
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Mozilla has confirmed a vulnerability in its Firefox browser that could be used by attackers to scout out a system before they undertake a more aggressive assault.
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A vulnerability in a Java plug-in from Sun Microsystems used by most web browsers poses a risk for users of IE and alternative browsers alike.
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(InfoWorld) - The Mozilla Foundation has published a fix for a "critical" JavaScript vulnerability in the Firefox browser and the SeaMonkey application suite. The fix, released Monday, targets Firefox versions 2.0.0.2 and 1.5.0.10, as well as SeaMonkey versions 1.1.1 and 1.0.8. An earlier fix for a JavaScript problem allowed scripts from Web content to execute arbitrary code, the Mozilla Foundation said in a security update. The vulnerability allowed uniform resource identifiers in image tags to be executed even if JavaScript was disabled in the program preferences, Mozilla said. Disabling JavaScript does not protect against the flaw, so the foundation recommended that users upgrade the applications to new versions. Mozilla's Thunderbird e-mail client was not affected by the vulnerability, it said. The fix comes on the heels ofÂ criticism from independent security researcher Michael Zalewski regarding Firefox vulnerabilities, including spoofing and phising threats aimed at the newly released Firefox version 2.0.0.2. Mozilla CSO Window SnyderÂ saidÂ she is seeing more customer feedback regarding browser security and hopes thatÂ more independent researchers and customer feedback will help the company patch flaws more quickly. "The browser is one of most critical pieces of software on the computer in terms of something attackers are going after," Snyder said. "Attacks are constantly changing and every software developer needs to recognize new threats as they emerge, but that's nothing new, we've always considered security to be a top priority." Matt Hines, a senior writer at InfoWorld, contributed to this report
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Security researchers can't decide whether it's in IE or Firefox A serious vulnerability that causes Internet Explorer to launch Firefox and execute a malicious payload is sparking debate about exactly who is responsible for the flaw.â¦
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Security firm Secunia has detailed a new flaw in Internet Explorer that affects users running Windows XP Service Pack 2. The vulnerability involves drag-and-drop, which can be used within a Web page to place a malicious program in the Windows startup folder.
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A flaw in the way the Firefox and Opera browsers handle an image file could allow an attacker to see what Web sites a person has visited.
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Update to "critical" Internet Explorer patch repairs a serious security flaw introduced by the original version.