CVE-2019-11038 Uninitialized read in gdImageCreateFromXbm

What is CVE-2019-11038?

CVE-2019-11038 is a low-severity vulnerability in Canonical Ubuntu Linux, published on 18 Jun 2019. 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

When using the gdImageCreateFromXbm() function in the GD Graphics Library (aka LibGD) 2.2.5, as used in the PHP GD extension in PHP versions 7.1.x below 7.1.30, 7.2.x below 7.2.19 and 7.3.x below 7.3.6, it is possible to supply data that will cause the function to use the value of uninitialized variable. This may lead to disclosing contents of the stack that has been left there by previous code.

Weakness: CWE-908, CWE-457

Which versions are affected by CVE-2019-11038?

It affects 13 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Libgd Libgd, Opensuse Leap, Php Php and 7 more.

How do I fix CVE-2019-11038?

Upgrade to a fixed version.

Is CVE-2019-11038 being exploited?

There is no known exploitation of CVE-2019-11038 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-2019-11038, DEBIAN-CVE-2019-11038, DLA-1817-1, GHSA-8v67-h8jw-j3r2, MGASA-2020-0134, UBUNTU-CVE-2019-11038.