CyberAlerts is shutting down on June 30th, 2025. Thank you for your support!

CVE-2025-2173: libzvbi conv.c vbi_strndup_iconv_ucs2 uninitialized pointer

6.9 CVSS

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. Es wurde eine problematische Schwachstelle in libzvbi bis 0.2.43 ausgemacht. Es geht dabei um die Funktion vbi_strndup_iconv_ucs2 der Datei src/conv.c. Mit der Manipulation des Arguments src_length mit unbekannten Daten kann eine uninitialized pointer-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk passieren. Der Exploit steht zur öffentlichen Verfügung. Ein Aktualisieren auf die Version 0.2.44 vermag dieses Problem zu lösen. Der Patch wird als 8def647eea27f7fd7ad33ff79c2d6d3e39948dce bezeichnet. Als bestmögliche Massnahme wird das Einspielen eines Upgrades empfohlen.

Classification

CVE ID: CVE-2025-2173

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.9

CVSS Vector: 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

Problem Types

Uninitialized Pointer Uninitialized Resource

Affected Products

Vendor: n/a

Product: libzvbi

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.07% (probability of being exploited)

EPSS Percentile: 19.14% (scored less or equal to compared to others)

EPSS Date: 2025-04-09 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-2173
https://vuldb.com/?id.299202
https://vuldb.com/?ctiid.299202
https://vuldb.com/?submit.512798
https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf
https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dce
https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44

Timeline