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Vulnerability DatabaseCVE-2021-39563
CVE-2021-39563:
NixOS vulnerability analysis and mitigation
Overview
A NULL pointer dereference vulnerability was discovered in swftools through 20200710. The vulnerability exists in the function swf_DumpActions() located in swfaction.c. This security flaw was assigned CVE-2021-39563 and was disclosed on September 20, 2021 (NVD, MITRE).
Technical details
The vulnerability is classified as a NULL pointer dereference issue occurring in the swf_DumpActions() function within the swfaction.c file. The CVSS v3.1 base score is 4.3 (MEDIUM) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. The vulnerability has been categorized under CWE-476 (NULL Pointer Dereference) (NVD).
Impact
When exploited, this vulnerability allows an attacker to cause a Denial of Service condition in the affected system. The impact is primarily on the availability of the system, with no direct impact on confidentiality or integrity (NVD).
Mitigation and workarounds
The vulnerability affects swftools versions through 20200710. Users should update to a newer version once available. No specific workarounds have been publicly documented (NVD).
Additional resources
Source: This report was generated using AI
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