CVE-2025-2174 libzvbi conv.c vbi_strndup_iconv_ucs2 integer overflow
Remote attackers can trigger an integer overflow in libzvbi's UCS-2 conversion function, potentially causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-2174?
CVE-2025-2174 is a medium-severity vulnerability in libzvbi, published on 11 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in libzvbi up to 0.2.43. It has been declared as problematic. Affected by this vulnerability is the function vbi_strndup_iconv_ucs2 of the file src/conv.c. The manipulation of the argument src_length leads to integer overflow. The attack can be launched 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 named 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.
Which versions are affected by CVE-2025-2174?
It affects 1 product.
Products include Zapping-Vbi Zvbi.
How do I fix CVE-2025-2174?
Upgrade to a fixed version.
Is CVE-2025-2174 being exploited?
There is no known exploitation of CVE-2025-2174 in the wild and no public exploit code.
Other vulnerabilities in libzvbi
Sources
Also known as DEBIAN-CVE-2025-2174, GHSA-2gqq-g5xg-qr37, UBUNTU-CVE-2025-2174.