CVE-2018-17000 Null dereference in n/a

What is CVE-2018-17000?

CVE-2018-17000 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 13 Sep 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2018-17000?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Libtiff Libtiff.

How do I fix CVE-2018-17000?

Upgrade to a fixed version.

Is CVE-2018-17000 being exploited?

There is no known exploitation of CVE-2018-17000 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-44331, DEBIAN-CVE-2018-17000, GHSA-xf25-29fj-q584, UBUNTU-CVE-2018-17000.