CVE-2025-2173

libzvbi conv.c vbi_strndup_iconv_ucs2 uninitialized pointer

State: Published
Severity: 6.9 Medium
Published: Mar 11, 2025
Updated: Mar 11, 2025
Reserved: Mar 10, 2025

Description

A vulnerability was found in libzvbi up to 0.2.43. It has been classified as problematic. Affected is the function vbi_strndup_iconv_ucs2 of the file src/conv.c. The manipulation of the argument src_length leads to uninitialized pointer. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.2.44 is able to address this issue. The patch is identified as 8def647eea27f7fd7ad33ff79c2d6d3e39948dce. It is recommended to upgrade the affected component. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N	VulDB
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	VulDB
3.0	5.3 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	VulDB
2.0	5.0 Medium	AV:N/AC:L/Au:N/C:P/I:N/A:N	VulDB

Weaknesses

CWE-824 Uninitialized Pointer
CWE-908 Uninitialized Resource

Affected Products

Product	Versions
libzvbin/a	0.2.0Affected 0.2.1Affected 0.2.2Affected 0.2.3Affected 0.2.4Affected 0.2.5Affected 0.2.6Affected 0.2.7Affected 0.2.8Affected 0.2.9Affected 0.2.10Affected 0.2.11Affected 0.2.12Affected 0.2.13Affected 0.2.14Affected 0.2.15Affected 0.2.16Affected 0.2.17Affected 0.2.18Affected 0.2.19Affected 0.2.20Affected 0.2.21Affected 0.2.22Affected 0.2.23Affected 0.2.24Affected and 19 more versions

References

VDB-299202 | libzvbi conv.c vbi_strndup_iconv_ucs2 uninitialized pointervdb-entrytechnical-description
VDB-299202 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #512798 | Open Source libzvbi 0.2.43 Unitinialized Heap Readthird-party-advisory
https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cfrelated
https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dcepatch
https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44patch

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