Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2022-27240
CVE-2022-27240:
Linux Debian vulnerability analysis and mitigation
Overview
CVE-2022-27240 affects Glewlwyd SSO server versions 2.x before 2.6.2. The vulnerability is a buffer overflow vulnerability associated with a webauthn assertion in the scheme/webauthn.c component (NVD, GitHub Release).
Technical details
The vulnerability has been assigned a CVSS v3.1 base score of 9.8 (CRITICAL) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. The vulnerability is classified as CWE-120 (Buffer Copy without Checking Size of Input). The issue occurs during webauthn signature assertion processing in the scheme/webauthn.c component (NVD).
Impact
Given the CVSS score of 9.8 and vector string, this vulnerability can be exploited remotely without requiring privileges or user interaction, potentially leading to high impacts on confidentiality, integrity, and availability of the affected system (NVD).
Mitigation and workarounds
The vulnerability has been fixed in Glewlwyd SSO server version 2.6.2. Users should upgrade to this version or later to address the security issue. The fix involves implementing proper buffer size checking during signature validation (GitHub Release, GitHub Commit).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
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