CVE-2025-2176

libzvbi io-sim.c vbi_capture_sim_load_caption integer overflow

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

Description

A vulnerability classified as critical has been found in libzvbi up to 0.2.43. This affects the function vbi_capture_sim_load_caption of the file src/io-sim.c. The manipulation leads to integer overflow. It is possible to initiate 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 identifier of the patch is ca1672134b3e2962cd392212c73f44f8f4cb489f. 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:L/VA:L/SC:N/SI:N/SA:N	VulDB
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	VulDB
3.0	7.3 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	VulDB
2.0	7.5 High	AV:N/AC:L/Au:N/C:P/I:P/A:P	VulDB

Weaknesses

CWE-190 Integer Overflow
CWE-189 Numeric Error

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-299205 | libzvbi io-sim.c vbi_capture_sim_load_caption integer overflowvdb-entrytechnical-description
VDB-299205 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #512802 | Open Source libzvbi 0.2.43 Integer Overflow -> Heap Overflow (vbi_capture_sim_load_caption)third-party-advisory
https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cfrelated
https://github.com/zapping-vbi/zvbi/commit/ca1672134b3e2962cd392212c73f44f8f4cb489fpatch
https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44patch

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