CVE-2024-56431

CRITICAL

Theora <1.0 - Buffer Overflow

Title source: llm

Description

oc_huff_tree_unpack in huffdec.c in libtheora in Theora through 1.0 7180717 has an invalid negative left shift. NOTE: this is disputed by third parties because there is no evidence of a security impact, e.g., an application would not crash.

Exploits (1)

nomisec WORKING POC 1 stars

by UnionTech-Software · poc

https://github.com/UnionTech-Software/libtheora-CVE-2024-56431-PoC

View Code ZIP pw:eip

References (6)

[Exploit] https://github.com/UnionTech-Software/libtheora-CVE-2024-56431-PoC

[Product] https://github.com/xiph/theora/blob/7180717276af1ebc7da15c83162d6c5d6203aabf/lib/huffdec.c#L193

[Issue Tracking] https://github.com/xiph/theora/issues/17#issuecomment-2480630603

[Mailing List] https://www.openwall.com/lists/oss-security/2025/04/25/6

[Mailing List] http://www.openwall.com/lists/oss-security/2025/04/25/4

[Mailing List] http://www.openwall.com/lists/oss-security/2025/04/25/6

Scores

CVSS v3 9.8

EPSS 0.1137

EPSS Percentile 93.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-863

Status published

Products (1)

xiph/theora < 1.2.0

Published Dec 25, 2024

Tracked Since Feb 18, 2026