| Name | CVE-2021-31292 |
| Description | An integer overflow in CrwMap::encode0x1810 of Exiv2 0.27.3 allows attackers to trigger a heap-based buffer overflow and cause a denial of service (DOS) via crafted metadata. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2750-1, DSA-4958-1 |
| Debian Bugs | 991706 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| exiv2 (PTS) | buster | 0.25-4+deb10u2 | fixed |
| buster (security) | 0.25-4+deb10u4 | fixed |
| bullseye | 0.27.3-3+deb11u2 | fixed |
| bullseye (security) | 0.27.3-3+deb11u1 | fixed |
| sid, trixie, bookworm | 0.27.6-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/Exiv2/exiv2/issues/1530
https://github.com/Exiv2/exiv2/commit/9b7a19f957af53304655ed1efe32253a1b11a8d0
In older releases affected code is in src/crwimage.cpp
This is a duplicate of CVE-2021-29458, but mitre finds the evidence unconvincing.