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Vulnerability DatabaseCVE-2021-39554
CVE-2021-39554:
NixOS vulnerability analysis and mitigation
Overview
A NULL pointer dereference vulnerability was discovered in swftools through version 20200710. The vulnerability exists in the function Lexer::Lexer() located in Lexer.cc file (GitHub Issue).
Technical details
The vulnerability is classified as a NULL pointer dereference issue with a CVSS v3.1 base score of 5.5 (MEDIUM) and vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. The CVSS v2.0 score is 4.3 (MEDIUM) with vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P). The vulnerability has been assigned CWE-476 (NULL Pointer Dereference) (NVD).
Impact
When successfully exploited, this vulnerability allows an attacker to cause a Denial of Service condition in the affected system (NVD).
Exploitability
The vulnerability requires user interaction to be exploited. An attacker can trigger the NULL pointer dereference through specially crafted input, which can lead to program termination (GitHub Issue).
Mitigation and workarounds
Users should upgrade to a version newer than 20200710 when available. No specific workarounds have been publicly documented (NVD).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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