#VU105976 Access of Uninitialized Pointer in zvbi - CVE-2025-2173

Vulnerability identifier: #VU105976

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-2173

CWE-ID: CWE-824

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
zvbi
Universal components / Libraries / Libraries used by multiple products

Vendor: zapping-vbi

Description

The vulnerability allows a remote attacker to preform a denial of service (DoS) attack.

The vulnerability exists due to access to uninitialized pointer within the vbi_strndup_iconv_ucs2() function in src/conv.c. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

zvbi: 0.2.36 - 0.2.43

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External links
https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dce
https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44
https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf
https://vuldb.com/?ctiid.299202
https://vuldb.com/?id.299202
https://vuldb.com/?submit.512798

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.