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Firefox 102 Patches 19 Vulnerabilities, Improves Privateness

By Ionut Arghire on June 29, 2022

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Mozilla this week introduced the provision of Firefox 102 within the steady channel with patches for 19 vulnerabilities, together with 4 high-severity bugs.

With the newest replace, Mozilla has patched CVE-2022-34470, a high-severity use-after-free difficulty in nsSHistory that was triggered when navigating between XML paperwork, and which might result in a doubtlessly exploitable crash.

Use-after-free vulnerabilities will be exploited to attain arbitrary code execution, information corruption, or denial of service, and will result in full system compromise if mixed with different flaws. Malicious web sites can exploit these bugs to flee a browser’s sandbox.

CVE-2022-34468, one other high-severity flaw addressed in Firefox 102, might permit for the bypass of a CSP sandbox header with out `allow-scripts` by utilizing a retargeted javascript: URI. Due to this difficulty, when a person clicks on a javascript: hyperlink, an iframe might run scripts with out authorization.

The brand new Firefox launch additionally resolves CVE-2022-34479, a Linux-specific difficulty that permits malicious web sites to create popup home windows that may be resized in such a way that the deal with bar can be overlayed with net content material, doubtlessly resulting in spoofing assaults.

A number of reminiscence security bugs have been assigned CVE-2022-34484, together with ones that “confirmed proof of JavaScript prototype or reminiscence corruption and we presume that with sufficient effort a few of these might have been exploited to run arbitrary code.”

Firefox 102 additionally improves person privateness by mitigating question parameter monitoring when navigating the web with Enhanced Monitoring Safety (ETP) strict mode enabled.

With ETP, Firefox confines cookies to the websites that created them, which prevents cross-site monitoring. Courtesy of the brand new functionality, Firefox can block particular monitoring parameters that web sites could also be utilizing to avoid the privateness protections that browsers have carried out.

Moreover, Firefox 102 handles audio decoding in a separate course of that options stricter sandboxing, to reinforce course of isolation.

Associated: Emergency Firefox Replace Patches Two Actively Exploited Zero-Day Vulnerabilities

Associated: New Firefox Characteristic Ups the Ante Towards Cookie-Primarily based Monitoring

Associated: Google Patches 14 Vulnerabilities With Launch of Chrome 103

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