CVE-2018-7456

MEDIUM

Description

A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 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://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: 2019-08-06

Type: CWE-476

Risk Information

CVSS v2.0

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 v3.0

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