CVE-2021-39587
NixOS vulnerability analysis and mitigation

Overview

A NULL pointer dereference vulnerability was discovered in swftools through version 20200710. The vulnerability exists in the function swf_DumpABC() located in abc.c. This issue was disclosed on September 20, 2021 with CVE identifier CVE-2021-39587 (NVD, CISA).

Technical details

The vulnerability is a NULL pointer dereference in the swf_DumpABC() function located in abc.c. The CVSS v3.1 base score is 5.5 (Medium) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. The CVSS v2.0 base score is 4.3 (Medium) with vector string (AV:N/AC:M/Au:N/C:N/I:N/A:P) (NVD).

Impact

When exploited, this vulnerability allows an attacker to cause a Denial of Service condition by triggering a crash through NULL pointer dereference (NVD).

Mitigation and workarounds

The vulnerability affects swftools through version 20200710. Users should update to a patched version when available (NVD).

Additional resources


SourceThis report was generated using AI

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