CVE-2024-56431

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CISA-ADPADP
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 89%
VendorProductVersion
xiphtheora
𝑥
< 1.2.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libtheora
bullseye
unimportant
bookworm
unimportant
sid
1.2.0~alpha1+dfsg-6
fixed
trixie
1.2.0~alpha1+dfsg-6
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libtheora
plucky
not-affected
oracular
not-affected
noble
not-affected
jammy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
Common Weakness Enumeration
References
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
https://www.openwall.com/lists/oss-security/2025/04/25/6
http://www.openwall.com/lists/oss-security/2025/04/25/4
http://www.openwall.com/lists/oss-security/2025/04/25/6