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Vulnerability DatabaseCVE-2021-45946
CVE-2021-45946:
NixOS vulnerability analysis and mitigation
Overview
Wasm3 version 0.5.0 contains an out-of-bounds write vulnerability in the CompileBlock function, which is called from Compile_LoopOrBlock and CompileBlockStatements functions. The vulnerability was discovered and disclosed in December 2021 (NVD, OSS-Fuzz).
Technical details
The vulnerability is classified as an out-of-bounds write (CWE-787) with a CVSS v3.1 base score of 5.5 (Medium). The issue occurs in the CompileBlock function when it's invoked through the call chain of Compile_LoopOrBlock and CompileBlockStatements. The vulnerability allows writing data outside the bounds of the intended memory location (NVD).
Impact
The vulnerability could lead to high availability impact through memory corruption, though there are no reported confidentiality or integrity impacts. The attack requires local access and user interaction to be exploited (NVD).
Mitigation and workarounds
Users should upgrade from Wasm3 version 0.5.0 to a patched version. The vulnerability has been fixed in subsequent releases (NVD).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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