CVE-2020-29385 Denial of service in n/a

What is CVE-2020-29385?

CVE-2020-29385 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 26 Dec 2020. 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

GNOME gdk-pixbuf (aka GdkPixbuf) before 2.42.2 allows a denial of service (infinite loop) in lzw.c in the function write_indexes. if c->self_code equals 10, self->code_table[10].extends will assign the value 11 to c. The next execution in the loop will assign self->code_table[11].extends to c, which will give the value of 10. This will make the loop run infinitely. This bug can, for example, be triggered by calling this function with a GIF image with LZW compression that is crafted in a special way.

Weakness: CWE-835

Which versions are affected by CVE-2020-29385?

It affects 3 products.

Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Gnome Gdk-Pixbuf.

How do I fix CVE-2020-29385?

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-2020-29385 being exploited?

There is no known exploitation of CVE-2020-29385 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 ALPINE-CVE-2020-29385, DEBIAN-CVE-2020-29385, GHSA-wf85-g3p6-xf4h, SUSE-SU-2021:0184-1, UBUNTU-CVE-2020-29385, USN-4663-1 and 1 more.