CVE-2023-0803 Memory corruption in libtiff

Medium 6.8 Published 13 Feb 2023 Updated 21 Mar 2025

Attackers can cause denial of service via crafted TIFF files exploiting an out-of-bounds write in LibTIFF's tiffcrop tool.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2023-0803?

CVE-2023-0803 is a medium-severity memory corruption vulnerability in Libtiff Libtiff, published on 13 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

LibTIFF 4.4.0 has an out-of-bounds write in tiffcrop in tools/tiffcrop.c:3516, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit 33aee127.

Weakness: CWE-787

Which versions are affected by CVE-2023-0803?

It affects 1 product.

Products include Libtiff Libtiff.

How do I fix CVE-2023-0803?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-0803 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0803 exists.

All Libtiff Libtiff vulnerabilities

Sources

Also known as ALPINE-CVE-2023-0803, AZL-13389, DEBIAN-CVE-2023-0803, GHSA-2rv8-rcwh-2x8r, JLSEC-2025-299, UBUNTU-CVE-2023-0803.