CVE-2020-36430

EUVD-2020-23958
libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decode_chars (called from decode_font and process_text) because the wrong integer data type is used for subtraction.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 53%
Affected Products (NVD)
VendorProductVersion
libass_projectlibass
0.15.0 ≤
𝑥
< 0.15.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libass
bookworm
1:0.17.1-1
fixed
bullseye
1:0.15.0-2
fixed
buster
not-affected
sid
1:0.17.3-1
fixed
stretch
not-affected
trixie
1:0.17.3-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libass
bionic
not-affected
focal
not-affected
groovy
ignored
hirsute
ignored
impish
not-affected
jammy
not-affected
trusty
not-affected
xenial
not-affected
Common Weakness Enumeration
References
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yaml
https://github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/
https://security.gentoo.org/glsa/202208-13
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yaml
https://github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/
https://security.gentoo.org/glsa/202208-13