CVE-2023-2731 Null dereference in libtiff

What is CVE-2023-2731?

CVE-2023-2731 is a medium-severity vulnerability in Fedoraproject Fedora, published on 17 May 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

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.

Weakness: CWE-476

Which versions are affected by CVE-2023-2731?

It affects 3 products.

Products include Fedoraproject Fedora, Libtiff Libtiff, Redhat Enterprise Linux.

How do I fix CVE-2023-2731?

Apply the vendor's patch.

Is CVE-2023-2731 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2731 exists.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-26756, AZL-43795, AZL-45003, BELL-CVE-2023-2731, DEBIAN-CVE-2023-2731, GHSA-g995-h8wx-7qw6 and 2 more.