Use-after-free in Firefox DOM HTML Parser

Executive Summary

This is a use-after-free vulnerability in Firefox's DOM HTML Parser component. It occurs when a program tries to use memory after it has been freed, potentially leading to crashes or arbitrary code execution.

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Detection Guidance

This vulnerability is fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3. To detect if your system is vulnerable, check the installed Firefox version using commands like 'firefox --version' or 'about:support' in Firefox. If the version is older than the patched releases, the system is vulnerable.

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Impact Analysis

An attacker could exploit this to crash your browser or run malicious code on your system. This could lead to data theft, installation of malware, or unauthorized system access if combined with other vulnerabilities.

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Compliance Impact

The provided CVE data does not specify how this vulnerability affects compliance with standards like GDPR or HIPAA. The description only mentions a use-after-free issue in Firefox's DOM HTML Parser component, fixed in specific Firefox versions.

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Mitigation Strategies

Update Firefox to version 156 or later, Firefox ESR to version 115.41 or later, Firefox ESR to version 140.16 or later, or Firefox ESR to version 153.3 or later to address the use-after-free vulnerability in the DOM HTML Parser component.

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