NULL pointer dereference in LibTIFF - CVE-2018-17000
Published: May 15, 2019
Vulnerability identifier: #VU18498
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-17000
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dreference error in the function _TIFFmemcmp at tif_unix.c (called from TIFFWriteDirectoryTagTransferfunction). A remote attacker can create a specially crafted tiff file and perform a denial of service (DoS) attack.
Affected software
LibTIFF
tiff (Debian package)
Opensuse
tiff (Debian package)
Opensuse
How to mitigate CVE-2018-17000
Install update from vendor's website.
LibTIFF - update to 4.0.10
tiff (Debian package) - update to 4.0.8-2+deb9u5
tiff (Debian package) - update to 4.0.8-2+deb9u5