CVE-2018-5711 Denial of service in n/a

What is CVE-2018-5711?

CVE-2018-5711 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 16 Jan 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.33, 7.0.x before 7.0.27, 7.1.x before 7.1.13, and 7.2.x before 7.2.1, has an integer signedness error that leads to an infinite loop via a crafted GIF file, as demonstrated by a call to the imagecreatefromgif or imagecreatefromstring PHP function. This is related to GetCode_ and gdImageCreateFromGifCtx.

Weakness: CWE-835, CWE-681

Which versions are affected by CVE-2018-5711?

It affects 3 products.

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

How do I fix CVE-2018-5711?

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-2018-5711 being exploited?

There is no known exploitation of CVE-2018-5711 in the wild and no public exploit code.

Public exploit code: 2 proofs of concept on GitHub.

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 ALPINE-CVE-2018-5711, DEBIAN-CVE-2018-5711, DLA-1248-1, GHSA-qwqg-rff2-45cw, SUSE-SU-2018:0235-1, SUSE-SU-2018:0260-1 and 1 more.