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CVE-2023-2731

Published: 17 May 2023

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.

Priority

Low

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
tiff
Launchpad, Ubuntu, Debian
xenial Not vulnerable
(code not present)
kinetic Ignored
(end of life, was needed)
upstream
Released (4.5.0-6,4.5.1)
lunar
Released (4.5.0-5ubuntu1.1)
bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
jammy Not vulnerable
(code not present)
trusty Not vulnerable
(code not present)
Patches:
upstream: https://gitlab.com/libtiff/libtiff/-/commit/9be22b639ea69e102d3847dca4c53ef025e9527b

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H