#VU106993 Input validation error in Theora - CVE-2024-56431

Vulnerability identifier: #VU106993

Vulnerability risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56431

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: xiph.org

Description

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

The vulnerability exists due to insufficient validation of user-supplied input within the oc_huff_tree_unpack() function in in huffdec.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

Theora: 1.0 - 1.1.1

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External links
https://github.com/UnionTech-Software/libtheora-CVE-2024-56431-PoC
https://github.com/xiph/theora/blob/7180717276af1ebc7da15c83162d6c5d6203aabf/lib/huffdec.c#L193
https://github.com/xiph/theora/issues/17#issuecomment-2480630603

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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.