Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2021-4070
CVE-2021-4070:
NixOS vulnerability analysis and mitigation
Overview
Off-by-one Error vulnerability (CVE-2021-4070) was discovered in GitHub repository v2fly/v2ray-core versions prior to 4.44.0. The vulnerability was disclosed on February 23, 2022, affecting the v2ray-core software component (NVD, AttackerKB).
Technical details
The vulnerability is classified as an Off-by-one Error (CWE-193). It received a CVSS v3.1 base score of 9.1 CRITICAL with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H, indicating network accessibility, low attack complexity, and no required privileges or user interaction (NVD).
Impact
Based on the CVSS score and vector, the vulnerability has high impact on confidentiality and availability of the system, while integrity remains unaffected. The critical severity rating suggests potential for significant system compromise (NVD).
Mitigation and workarounds
Users should upgrade to v2ray-core version 4.44.0 or later which contains the fix for this vulnerability. The fix has been implemented through a patch that addresses the off-by-one error in the CommandSwitchAccountFactory component (GitHub Commit).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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