| Name | CVE-2021-20304 |
| Description | A flaw was found in OpenEXR's hufDecode functionality. This flaw allows an attacker who can pass a crafted file to be processed by OpenEXR, to trigger an undefined right shift error. The highest threat from this vulnerability is to system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| openexr (PTS) | jessie, jessie (lts) | 1.6.1-8+deb8u3 | vulnerable |
| stretch (security), stretch (lts), stretch | 2.2.0-11+deb9u4 | vulnerable |
| buster | 2.2.1-4.1+deb10u1 | vulnerable |
| buster (security) | 2.2.1-4.1+deb10u2 | vulnerable |
| bullseye (security), bullseye | 2.5.4-2+deb11u1 | fixed |
| bookworm | 3.1.5-5 | fixed |
| sid, trixie | 3.1.5-5.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| openexr | source | (unstable) | 2.5.4-1 | unimportant | | |
Notes
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26229
https://github.com/AcademySoftwareFoundation/openexr/commit/51a92d67f53c08230734e74564c807043cbfe41e
https://github.com/AcademySoftwareFoundation/openexr/pull/849
Negligible security impact