Vulnerability · Published May 17, 2023 · Assigned by redhat
CVE-2023-2731
Medium 5.5
In plain English
A medium-severity null pointer dereference in libtiff. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.4%top 62.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | libtiff | 4.4.0-10.el9 | ALSA-2023:6575 |
| AlmaLinux:9 | libtiff-devel | 4.4.0-10.el9 | ALSA-2023:6575 |
| AlmaLinux:9 | libtiff-tools | 4.4.0-10.el9 | ALSA-2023:6575 |
| Debian:12 | tiff | 4.5.0-6 | DEBIAN-CVE-2023-2731 |
| Debian:13 | tiff | 4.5.0-6 | DEBIAN-CVE-2023-2731 |
| Debian:14 | tiff | 4.5.0-6 | DEBIAN-CVE-2023-2731 |
| Ubuntu:22.04:LTS | tiff | 4.3.0-6ubuntu0.5 | USN-6290-1 |
| Ubuntu:22.04:LTS | tiff | 4.3.0-6ubuntu0.10 | UBUNTU-CVE-2023-2731 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H