Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

Vulnerabilities

Mozilla Fixes 9 Vulnerabilities in Firefox 35

Mozilla released Firefox 35 on Tuesday. In addition to new features, changes and fixes, the latest version of the popular Web browser addresses several critical vulnerabilities.

Mozilla released Firefox 35 on Tuesday. In addition to new features, changes and fixes, the latest version of the popular Web browser addresses several critical vulnerabilities.

A total of nine security holes have been fixed, three of which have been rated as critical. One of these bugs, reported by MWR Labs researcher Nils, is a Gecko Media Plugin sandbox escape (CVE-2014-8643) affecting the Windows version of Firefox.

“The GMP sandbox is currently only used to host h.264 video playback using the OpenH264 plugin but is being developed to host other other media plugins. This bug would allow an attacker to escape or bypass the GMP sandbox if another exploitable bug is found in a GMP media plugin which allowed them to compromise the GMP process,” Mozilla wrote in an advisory.

Another critical vulnerability was identified by researcher Mitchell Harper. The expert discovered a read-after-free in WebRTC (CVE-2014-8641) caused by the way tracks are handled.

“This results in a either a potentially exploitable crash or incorrect WebRTC behavior,” Mozilla said.

Mozilla developers have found memory safety bugs in the browser engine (CVE-2014-8634 and CVE-2014-8635). These issues have also been rated as critical.

Google’s Michal Zalewski (lcamtuf) reported a high-impact uninitialized memory use flaw (CVE-2014-8637) affecting Firefox and the open-source Internet suite SeaMonkey.

“[The researcher] reported that when a malformed bitmap image is rendered by the bitmap decoder within a <canvas> element, memory may not always be properly initialized. The resulting image then uses this uninitialized memory during rendering, allowing data to potentially leak to web content,” Mozilla explained.

Advertisement. Scroll to continue reading.

The list of vulnerabilities fixed in Firefox 35 also includes an XrayWrapper bypass through DOM objects, a read of uninitialized memory in Web Audio, a cookie injection issue through Proxy Authenticate responses, and a flaw related to the fact that sendBeacon requests lack an Origin header. All of these security bugs have a moderate impact, Mozilla said.

Finally, an Online Certificate Status Protocol (OCSP) response verification failure (CVE-2014-8642), rated as “low,” has also been fixed.

Google also updated Chrome on Tuesday. Chrome 39.0.2171.99 includes a Flash Player update that addresses a total of nine vulnerabilities, and several other fixes.

Microsoft also published security updates on Tuesday to fix various Windows vulnerabilities, including one that has been exploited in targeted attacks and two privilege escalation issues disclosed by Google.

Written By

Eduard Kovacs (@EduardKovacs) is a managing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Trending

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Discover strategies for vendor selection, integration to minimize redundancies, and maximizing ROI from your cybersecurity investments. Gain actionable insights to ensure your stack is ready for tomorrow’s challenges.

Register

Dive into critical topics such as incident response, threat intelligence, and attack surface management. Learn how to align cyber resilience plans with business objectives to reduce potential impacts and secure your organization in an ever-evolving threat landscape.

Register

People on the Move

Software giant Atlassian has named David Cross as its new CISO.

Dan Pagel has been named the new CEO of risk management and remediation firm Brinqa.

The City of Phoenix has promoted Mitch Kohlbecker to the role of Chief Information Security Officer.

More People On The Move

Expert Insights

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest cybersecurity news, threats, and expert insights. Unsubscribe at any time.