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Vulnerability DatabaseCVE-2021-45929

CVE-2021-45929: 
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 CompileElseBlock and Compile_If functions. The vulnerability was discovered and disclosed on July 26, 2021 (OSS-Fuzz Report, OSV Database).

Technical details

The vulnerability is classified as an UNKNOWN WRITE type vulnerability in the CompileBlock function, specifically when called through the execution path of CompileElseBlock and Compile_If. The CVSS v3.1 base score for this vulnerability is 5.5 MEDIUM, with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (NVD Database).

Impact

The vulnerability can lead to out-of-bounds write operations, which could potentially result in memory corruption and system crashes. This primarily affects the availability of systems running the vulnerable version of Wasm3 (NVD Database).

Mitigation and workarounds

The vulnerability was fixed in a subsequent version after v0.5.0. Users should upgrade to a patched version of Wasm3 to mitigate this vulnerability (OSV Database).

Additional resources

Source: This report was generated using AI

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