libzvbi up to 0.2.43 src/io-sim.c vbi_capture_sim_load_caption integer overflow

Summaryinfo

A vulnerability marked as problematic has been reported in libzvbi up to 0.2.43. Impacted is the function vbi_capture_sim_load_caption of the file src/io-sim.c. Performing a manipulation results in integer overflow. This vulnerability is known as CVE-2025-2176. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to upgrade the affected component. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional.

Detailsinfo

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 with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. The impact remains unknown.

The weakness was published by Yariv Nedivi as GHSA-g7cg-7gw9-v8cf. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-2176. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

It is declared as proof-of-concept. The code maintainer was informed beforehand about the issues. She reacted very fast and highly professional. The vulnerability scanner Nessus provides a plugin with the ID 233205 (SUSE SLED15 / SLES15 / openSUSE 15 Security Update : zvbi (SUSE-SU-2025:0979-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.2.44 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch ca1672134b3e2962cd392212c73f44f8f4cb489f is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (233205). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• libzvbi

Version

• 0.2.0
• 0.2.1
• 0.2.2
• 0.2.3
• 0.2.4
• 0.2.5
• 0.2.6
• 0.2.7
• 0.2.8
• 0.2.9
• 0.2.10
• 0.2.11
• 0.2.12
• 0.2.13
• 0.2.14
• 0.2.15
• 0.2.16
• 0.2.17
• 0.2.18
• 0.2.19
• 0.2.20
• 0.2.21
• 0.2.22
• 0.2.23
• 0.2.24
• 0.2.25
• 0.2.26
• 0.2.27
• 0.2.28
• 0.2.29
• 0.2.30
• 0.2.31
• 0.2.32
• 0.2.33
• 0.2.34
• 0.2.35
• 0.2.36
• 0.2.37
• 0.2.38
• 0.2.39
• 0.2.40
• 0.2.41
• 0.2.42
• 0.2.43

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Submitinfo

Accepted

• Submit #512802: Open Source libzvbi 0.2.43 Integer Overflow -> Heap Overflow (vbi_capture_sim_load_caption) (by ninpwn)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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