CVE-2019-13224 Use after free in n/a

What is CVE-2019-13224?

CVE-2019-13224 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 10 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause information disclosure, denial of service, or possibly code execution by providing a crafted regular expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional libraries for PHP and Rust.

Weakness: CWE-416

Which versions are affected by CVE-2019-13224?

It affects 5 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Oniguruma Project Oniguruma, Php Php.

How do I fix CVE-2019-13224?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2019-13224 being exploited?

There is no known exploitation of CVE-2019-13224 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-2019-13224, DLA-1854-1, GHSA-p5x5-jvwg-8vjr, UBUNTU-CVE-2019-13224, USN-4088-1.