Yahoo email patch ineffective, security researchers say
Yahoo fixed an XSS flaw in its email application earlier this week but it apparently doesn't repair the problem
IDG News Service - Security researchers say a patch released by Yahoo earlier this week for a serious email vulnerability did not fix the problem, leaving users at risk.
The cross-site scripting flaw was found by Shahin Ramezany, who goes by the nickname "Abysssec." The vulnerability can allow an attacker to harvest a victim's cookie for their Yahoo account if the victim is successfully tricked into clicking on a malicious link.
The vulnerability was patched by Yahoo on Monday, but penetration testing company Offensive Security and Ramezany say that the patch did not fix the problem.
"With little modification to the original proof-of-concept code written by Abysssec, it is still possible to exploit the original Yahoo vulnerability, allowing an attacker to completely take over a victim's account," Offensive Security wrote on its blog.
A Yahoo spokeswoman did not have an immediate comment when contacted Wednesday.
Offensive Security hosted a video showing how the attack works but left out details that might allow attackers to replicate it. The company said XSS filters provide little defense against an attack and warned that people should be wary of clicking on links within emails until Yahoo fixes the vulnerability.
Send news tips and comments to firstname.lastname@example.org. Follow me on Twitter: @jeremy_kirk
- Path Selection Infographic Path Selection Infographic
- Hyperconvergence Infographic A wide range of observers agree that data centers are now entering an era of "hyperconvergence" that will raise network traffic levels faster...
- Preparing Your Infrastructure for the Hyperconvergence Era From cloud computing and virtualization to mobility and unified communications, an array of innovative technologies is transforming today's data centers.
- Increase IT Performance from the Enterprise to the Cloud with WAN Optimization Massive consolidation and data mobility, enabled by virtualization, have radically altered how we build servers, design applications, and deploy storage for the emerging...
- Live Webcast
Transforming Finance, Procurement and Supply Chain Effectiveness with Cross-Functional Analytics
Date: May 6th, 2014
Time: 1 PM EDT
Attend this Webcast to find out how Oracle's packaged analytic applications enable line-of-business managers to examine all...
- Video Stream Quality Impacts Viewer Behavior This scientific white paper, using statistical data from Amakai's streaming network, analyzes how changes in video quality cause changes in viewer behavior.
- Service-Enabling CICS Applications: Best Practices This informative webcast provides an informed, thorough look into CICS service-enablement options and how they can affect your environment. You'll learn how to... All Applications White Papers | Webcasts