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Vulnerability DatabaseCVE-2023-49355

CVE-2023-49355: 
NixOS vulnerability analysis and mitigation

Overview

CVE-2023-49355 affects the decToString function in decNumber/decNumber.c in jq version 88f01a7. The vulnerability is characterized by a one-byte out-of-bounds write that can be triggered via the input " []-1.2e-1111111111". This vulnerability is distinct from CVE-2023-50246, which involves a different input pattern (NVD, Ubuntu).

Technical details

The vulnerability is classified as a heap buffer overflow (CWE-787) with a CVSS v3.1 base score of 7.5 (HIGH). The issue occurs in the decToString function at line 3764 of decNumber.c. The vulnerability can be triggered through specific input patterns that cause a one-byte out-of-bounds write in the heap memory (Bug Report).

Impact

When exploited, this vulnerability can lead to a denial of service condition. The heap buffer overflow can potentially crash the application when processing specially crafted JSON input (Bug Report).

Mitigation and workarounds

The vulnerability affects jq version 88f01a7. Several Linux distributions have marked their packages as not affected due to the vulnerable code not being present in their versions. For affected systems, updating to a patched version is recommended (Debian Tracker).

Additional resources

Source: This report was generated using AI

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