CVE-2025-2173: zvbi — Fix

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.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-824 CWE-824

CWE-908 CWE-908

Affected Products

Vendor	Product	Versions
zapping-vbi	zvbi	< 0.2.44

References

Advisories & Patches

https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dce https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf

Other References

https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44 https://vuldb.com/?ctiid.299202 https://vuldb.com/?id.299202 https://vuldb.com/?submit.512798

Frequently Asked Questions

What is CVE-2025-2173? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-2173? +

CVE-2025-2173 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-2173? +

CVE-2025-2173 affects products from zapping-vbi, specifically: zvbi. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-2173? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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