| Name | CVE-2023-2731 |
| Description | A NULL pointer dereference flaw was found in Libtiff's LZWDecode() function in the libtiff/tif_lzw.c file. This flaw allows a local attacker to craft specific input data that can cause the program to dereference a NULL pointer when decompressing a TIFF format file, resulting in a program crash or denial of service. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1036282 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| tiff (PTS) | bullseye | 4.2.0-1+deb11u5 | fixed |
| bullseye (security) | 4.2.0-1+deb11u6 | fixed |
| bookworm | 4.5.0-6+deb12u2 | fixed |
| bookworm (security) | 4.5.0-6+deb12u1 | fixed |
| sid, trixie | 4.5.1+git230720-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| tiff | source | buster | (not affected) | | | |
| tiff | source | bullseye | (not affected) | | | |
| tiff | source | (unstable) | 4.5.0-6 | | | 1036282 |
Notes
[bullseye] - tiff <not-affected> (Vulnerable code introduced later)
[buster] - tiff <not-affected> (Vulnerable code introduced later)
https://gitlab.com/libtiff/libtiff/-/issues/548
Fixed by: https://gitlab.com/libtiff/libtiff/-/commit/9be22b639ea69e102d3847dca4c53ef025e9527b (v4.5.1rc1)
Introduced by: https://gitlab.com/libtiff/libtiff/-/commit/3079627ea0dee150e6a208cec8381de611bb842b (v4.4.0rc1)