CVE-2018-7456

medium

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.)

References

http://bugzilla.maptools.org/show_bug.cgi?id=2778

https://access.redhat.com/errata/RHSA-2019:2051

https://access.redhat.com/errata/RHSA-2019:2053

https://github.com/xiaoqx/pocs/tree/master/libtiff

https://gitlab.com/libtiff/libtiff/commit/be4c85b16e8801a16eec25e80eb9f3dd6a96731b

https://lists.debian.org/debian-lts-announce/2018/04/msg00010.html

https://lists.debian.org/debian-lts-announce/2018/04/msg00011.html

https://lists.debian.org/debian-lts-announce/2018/07/msg00002.html

https://usn.ubuntu.com/3864-1/

https://www.debian.org/security/2018/dsa-4349

Details

Source: MITRE

Published: 2018-02-24

Updated: 2021-01-29

Type: CWE-476

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM