CVE-2018-7456

Name: CVE-2018-7456
Creator: NVD / NIST
Published: 2018-02-24T06:29:00.63+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.07%

Last modified Jun 17, 2026

CVE-2018-7456 is a vulnerability of currently unknown severity. A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013. (This affects an earlier part of the TIFFPrintDirectory function that was not addressed by the CVE-2017-18013 patch.). EPSS estimates a 3.07% chance of exploitation in the next 30 days.

Description

A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013. (This affects an earlier part of the TIFFPrintDirectory function that was not addressed by the CVE-2017-18013 patch.)

Metrics

EPSS Probability

3.07%

86.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Libtiff	Libtiff	4.0.9
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10

References

http://bugzilla.maptools.org/show_bug.cgi?id=2778Exploit, Issue Tracking, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2051
https://access.redhat.com/errata/RHSA-2019:2053
https://github.com/xiaoqx/pocs/tree/master/libtiffExploit, Third Party Advisory
https://gitlab.com/libtiff/libtiff/commit/be4c85b16e8801a16eec25e80eb9f3dd6a96731bPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00010.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00011.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00002.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3864-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4349Third Party Advisory
http://bugzilla.maptools.org/show_bug.cgi?id=2778Exploit, Issue Tracking, Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2051
https://access.redhat.com/errata/RHSA-2019:2053
https://github.com/xiaoqx/pocs/tree/master/libtiffExploit, Third Party Advisory
https://gitlab.com/libtiff/libtiff/commit/be4c85b16e8801a16eec25e80eb9f3dd6a96731bPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00010.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00011.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00002.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3864-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4349Third Party Advisory

Timeline

Published: Feb 24, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-7456?

How severe is CVE-2018-7456?

Severity scoring for CVE-2018-7456 is pending analysis. The EPSS model estimates a 3.07% probability of exploitation in the next 30 days.

How do I fix CVE-2018-7456?

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-2018-7456?

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

Scan your code now

Source: NVD / NIST