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Vulnerability DatabaseCVE-2020-19725
CVE-2020-19725:
NixOS vulnerability analysis and mitigation
Overview
A use-after-free vulnerability exists in file pdd_simplifier.cpp in Z3 before version 4.8.8. The vulnerability was discovered in March 2020 and is tracked as CVE-2020-19725. The flaw affects the Z3 theorem prover developed by Microsoft (NVD).
Technical details
The vulnerability occurs when the solver attempts to simplify constraints in the pdd_simplifier.cpp file, specifically around line 131. This leads to unexpected memory access after memory has been freed. The issue has been assigned a CVSS v3.1 base score of 7.8 (High) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (NVD, Z3 Issue).
Impact
Successful exploitation of this vulnerability can lead to segmentation faults or potential arbitrary code execution in the context of the current process. The flaw affects the core functionality of the Z3 theorem prover when attempting to simplify constraints (NVD).
Mitigation and workarounds
Users should upgrade to Z3 version 4.8.8 or later which contains the fix for this vulnerability (NVD).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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