CVE-2025-2173

libzvbi conv.c vbi_strndup_iconv_ucs2 uninitialized pointer

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.

Category

6.9
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Third-Party Advisory vuldb.com
Affected: n/a libzvbi
Published at:
Updated at:

References

Link Tags
https://vuldb.com/?id.299202 vdb entry technical description
https://vuldb.com/?ctiid.299202 signature permissions required
https://vuldb.com/?submit.512798 third party advisory
https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf related
https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dce patch
https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44 patch

Frequently Asked Questions

What is the severity of CVE-2025-2173?
CVE-2025-2173 has been scored as a medium severity vulnerability.
How to fix CVE-2025-2173?
To fix CVE-2025-2173, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-2173 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-2173 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-2173?
CVE-2025-2173 affects n/a libzvbi.
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