CVE-2018-20467 Denial of service in n/a

What is CVE-2018-20467?

CVE-2018-20467 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 26 Dec 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

In coders/bmp.c in ImageMagick before 7.0.8-16, an input file can result in an infinite loop and hang, with high CPU and memory consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file.

Weakness: CWE-835

Which versions are affected by CVE-2018-20467?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Imagemagick Imagemagick, Opensuse Leap.

How do I fix CVE-2018-20467?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-20467 being exploited?

There is no known exploitation of CVE-2018-20467 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 DEBIAN-CVE-2018-20467, GHSA-jc3x-vm97-3mq2, JLSEC-2026-825, UBUNTU-CVE-2018-20467.