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Vulnerability DatabaseCVE-2021-3776
CVE-2021-3776:
PHP vulnerability analysis and mitigation
Overview
A Cross-Site Request Forgery (CSRF) vulnerability was identified in showdoc, tracked as CVE-2021-3776. The vulnerability was discovered and reported on September 6, 2021 (CVE Mitre).
Technical details
The vulnerability affects the cookie handling mechanism in showdoc's user controller. The issue was specifically related to insufficient CSRF protection in the cookie implementation, as evidenced by the subsequent fix that implemented strict cookie controls and SameSite attributes for PHP versions 7.3.0 and above (GitHub Commit).
Impact
The CSRF vulnerability could potentially allow attackers to perform unauthorized actions on behalf of authenticated users, compromising the security of the application (CVE Mitre).
Mitigation and workarounds
The vulnerability was addressed through a patch that implemented strict cookie controls. For PHP versions 7.3.0 and above, the fix includes setting the SameSite attribute to 'Strict' and adding proper httponly flags. For older PHP versions, the fix implements basic cookie security controls with httponly flags (GitHub Commit).
Additional resources
Source: This report was generated using AI
Related PHP vulnerabilities:
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