CVE-2023-2731

Name: CVE-2023-2731
Creator: NVD / NIST
Published: 2023-05-17T22:15:11.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2023-2731 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.43%

34.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Libtiff	Libtiff	< 4.5.0
Fedoraproject	Fedora	38
Redhat	Enterprise Linux	9.0

References

https://access.redhat.com/security/cve/CVE-2023-2731Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2207635Issue Tracking, Patch, Third Party Advisory
https://github.com/libsdl-org/libtiff/commit/9be22b639ea69e102d3847dca4c53ef025e9527bPatch
https://gitlab.com/libtiff/libtiff/-/issues/548Exploit, Issue Tracking, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20230703-0009/
https://access.redhat.com/security/cve/CVE-2023-2731Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2207635Issue Tracking, Patch, Third Party Advisory
https://github.com/libsdl-org/libtiff/commit/9be22b639ea69e102d3847dca4c53ef025e9527bPatch
https://gitlab.com/libtiff/libtiff/-/issues/548Exploit, Issue Tracking, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20230703-0009/

Timeline

Published: May 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-2731?

How severe is CVE-2023-2731?

CVE-2023-2731 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2731?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-2731?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST