What’s Vulnerable › Vulnerabilities

CVE-2018-17000

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-09-13 · updated 2026-06-17
• Weakness: CWE-476

Description

A NULL pointer dereference in the function _TIFFmemcmp at tif_unix.c (called from TIFFWriteDirectoryTagTransferfunction) in LibTIFF 4.0.9 allows an attacker to cause a denial-of-service through a crafted tiff file. This vulnerability can be triggered by the executable tiffcp.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 18.10
• Debian Linux: 8.0
• libtiff: 4.0.9

References

• http://bugzilla.maptools.org/show_bug.cgi?id=2811
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html
• http://www.securityfocus.com/bid/105342
• https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html
• https://usn.ubuntu.com/3906-1/
• https://www.debian.org/security/2020/dsa-4670
• http://bugzilla.maptools.org/show_bug.cgi?id=2811
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html
• http://www.securityfocus.com/bid/105342
• https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html
• https://usn.ubuntu.com/3906-1/
• https://www.debian.org/security/2020/dsa-4670

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