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Vulnerability DatabaseCVE-2021-33798
CVE-2021-33798:
NixOS vulnerability analysis and mitigation
Overview
A null pointer dereference vulnerability was discovered in libpano13 version 2.9.20 (CVE-2021-33798). The vulnerability was identified in the panoParserFindOLine() function within the parser.c file, where a null pointer dereference could lead to a denial of service condition (NVD).
Technical details
The vulnerability exists in the panoParserFindOLine() function in parser.c where a null pointer dereference occurs at line 2494. Specifically, when strchr() returns NULL, the code proceeds to increment the pointer (ptr++), resulting in an invalid memory access. The CVSS v3.1 base score is 6.5 (Medium) with vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (NVD, Hugin PTX).
Impact
The vulnerability can cause a denial of service condition through an out-of-bounds read and subsequent crash when processing crafted input files (NVD).
Mitigation and workarounds
A patch was committed to address the vulnerability by adding a null pointer check before incrementing the pointer in the panoParserFindOLine() function (Panotools Patch).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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