CVE-2018-7456

Public Exploit

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.)

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.01% Top 25%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://lists.debian.org/debian-lts-announce/2018/04/msg00011.html third party advisory mailing list
https://usn.ubuntu.com/3864-1/ third party advisory vendor advisory
https://www.debian.org/security/2018/dsa-4349 third party advisory vendor advisory
https://github.com/xiaoqx/pocs/tree/master/libtiff third party advisory exploit
http://bugzilla.maptools.org/show_bug.cgi?id=2778 third party advisory issue tracking exploit
https://lists.debian.org/debian-lts-announce/2018/07/msg00002.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2018/04/msg00010.html third party advisory mailing list
https://gitlab.com/libtiff/libtiff/commit/be4c85b16e8801a16eec25e80eb9f3dd6a96731b third party advisory patch
https://access.redhat.com/errata/RHSA-2019:2051 vendor advisory
https://access.redhat.com/errata/RHSA-2019:2053 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-7456?
CVE-2018-7456 has been scored as a medium severity vulnerability.
How to fix CVE-2018-7456?
To fix CVE-2018-7456, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7456 being actively exploited in the wild?
It is possible that CVE-2018-7456 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.