CVE-2019-7663

MEDIUM

Description

An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.

References

http://bugzilla.maptools.org/show_bug.cgi?id=2833

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html

https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39

https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html

https://usn.ubuntu.com/3906-1/

https://usn.ubuntu.com/3906-2/

Details

Source: MITRE

Published: 2019-02-09

Updated: 2019-04-23

Type: CWE-119

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