Skype squishes cross-zone scripting bug
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Underlying weakness nixed Skype has fixed a cross-zone scripting weakness in its voice over IP client software which spawned a couple of security bugs over recent weeks.â¦
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Internet telephony application balks on IPaq and Axim Pocket PC devices.
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(InfoWorld) - A new variant ofÂ the Stration worm, which has been plaguing Windows users for the past year, has made the jump from Skype to the ICQ and MSN Messenger networks. This latest variant popped up earlier this week, according to Chris Boyd, a researcher at FaceTime Communications, who blogs under the pseudonym "Paperghost." "They're using Skype as a jump off into other more established networks," Boyd said. "The infection will go looking for other instant messaging clients that are on the PC and then attempt to send the infection message that it initially sends through Skype through these other chat systems." For a computer to be infected, a user must first click on a link and then agree to download an executable file. In one sample provided by Boyd, the malicious link is listed below the instant message, "Check this out. Give me your opinion." Once installed, the worm will gradually start to send out messages to the victim's contacts, Boyd said. Instant message worms have spread from network-to-network in the past, but this is the first time Boyd has seen a worm jump from Skype to another network. "It's an odd system to make, because these guys have a foot in the door [in the Skype network]," he said. "You think they'd focus all their energies onto exploiting Skype." Stration is not widespread and is considered to be a low-risk infection, but it has been a tough worm to fight for some security vendors. Over the past year it has morphed into hundreds of variants, and antivirus companies have been having a hard time keeping track of its many iterations. Stration has also been called "Warezov" and "Stratio." Nobody knows who is behind the worm, but the domains that host the malicious code are registered through a Chinese Internet company, Boyd said. Â
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Attack uses CAST statements in its SQL injected script
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Communications company Skype released a beta of its latest client for the Mac OS Wednesday, adding video support to the client that would permit cross-platform video calls.
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eEye Digital Security has alerted Microsoft's bug team about a remote code vulnerabilityin Office 2007. Microsoft confirmed that  it's looking into the report.
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A vulnerability in Internet Explorer spells potential trouble for Skype users who add or play video in their chats.
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Skype has been forced to turn off a video-sharing feature in its software because it could be misused to launch a self-copying worm attack against Skype users, security researchers said Tuesday.A bug in the software, which was first reported last Thursday by security researcher Aviv Raff, stems from the way Skype uses an Internet Explorer component to render HTML.Skype&#39;s video-sharing feature allows users to share videos hosted on two sites -- Dailymotion.com and Metacafe.com -- while chatting with other Skype users.Last week Raff showed how attackers could exploit the bug to run unauthorized software on a Skype user&#39;s PC. But on Tuesday, the security researcher said the flaw was more serious than he&#39;d first thought. It can &quot;be triggered by simply visiting a Web site, or clicking on a link from your instant messaging application,&quot; he wrote in a blog posting, &quot;Which basically means that this vulnerability is now wormable.&quot;Skype appeared to have pulled the video feature from its client software on Tuesday as a result of the bug. Users who attempted to click on the &quot;videos&quot; button within a chat window were greeted with a message that the feature was unavailable &quot;because of some security concerns.&quot;&quot;Our brightest engineers are rattling their wrenches to make things all right and bring the beloved videos back. Soon,&quot; the message read. &quot;Sorry about this.&quot;Skpe representatives did not return calls seeking comment. Last week, Skype spokesman Villu Arak confirmed that there was a security problem for Skype 3.5 and 3.6 users who visited the Dailymotion.com Web site, but users were still able to share videos using Metacafe.com.On Tuesday, however, Skype pulled the video feature altogether after being informed of the new problem, Raff said.Because Metacafe had a cross-site scripting flaw, a common type of programming error, Raff was able to run JavaScript on Metacafe.com, which could then be used to run unauthorized software on the victim&#39;s computer. Attackers could then forward a link to the malicious Web page to all of the Skype contacts in the victim&#39;s computer, spreading the infection.For Raff&#39;s attack to work, an attacker would have to post a maliciously encoded video file to either of the Metacafe or Dailymotion Web sites. Metacafe said Tuesday that it&#39;s &quot;highly unlikely&quot; that this kind of malicious video would make it through the site&#39;s content-filtering process.In a statement, the company said it expects Metacafe videos to be available to Skype users as early as Wednesday morning.Raff said that because the attack could lead to a widespread worm outbreak, it would be better for Skype to fix the underlying problem before bringing Metacafe back online.Raff believes that Dailymotion was probably susceptible to this type of attack as well, although he was unable to confirm this after Skype cut off access to the Web site.The problem lies in the fact that Skype uses a Windows Internet Explorer component with inappropriate security settings, researchers say. Instead of processing pages it renders with the more secure &quot;Internet Zone&quot; security setting, Skype uses IE&#39;s &quot;Local Zone&quot; security setting, usually reserved for more trustworthy content.Until Skype engineers make some changes to their software, more of these problems will continue to pop up, Raff said.Another security researcher who has been studying the flaw agreed.&quot;If they keep their Skype client running in the Local Zone of IE, we will see more of these,&quot; said Petko Petkov of GNU Citizen via instant message. &quot;Before killing Metacafe, anyone who owns the server would have been able to own every Skype user on the planet.&quot;
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Dial M for Malware The authors of the prolific Warezov worm are targeting users of Skype.â¦
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Password-stealing Trojan horse may--or may not--be targeting popular VoIP feature.
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According to this security release from Secunia, there's a cross-site scripting vulnerability with the Travelsized CMS package (PHP-based) in the main index file.   David Vieira-Kurz has discovered some vulnerabilities in Travelsized CMS, which can be exploited by malicious people to conduct cross-site scripting attacks.   The problem comes from the input parameters "page" and "langauge" not being verified and sanitized. Users are encouraged to go in and manually edit the source to correct the problem as there is no patch currently posted as of yet. You can get complete information about this issue from the full Secunia report.
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"Highly critical" flaw patched in Cerulean Studios' multi-protocol chat software, which supports several popular IM services.
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Although Skype today plugged another critical flaw in its software, vulnerability researcher Aviv Raff said that another problem, this one in the SkypeFind feature, can be used to inject attack script into systems.
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The &quot;highly critical&quot; vulnerabilities stem from a flaw in IE&#39;s drag-and-drop feature and in the browser&#39;s security zone.
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Skype Ltd. has patched a critical vulnerability that had forced it to cull several features from its VoIP and chat software to stop attackers from hijacking users' PCs.
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VOIP service Skype is warning users about a Windows worm that spreads through the Skype's chat service, posing as a legitimate chat message.
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Skype turned off a video-sharing feature in its software because it could be misused to launch a self-copying worm attack against Skype users, security researchers said today.