CVE-2018-18356 Use after free in Chrome

What is CVE-2018-18356?

CVE-2018-18356 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 11 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

An integer overflow in path handling lead to a use after free in Skia in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Weakness: CWE-787, CWE-416, CWE-190

Which versions are affected by CVE-2018-18356?

It affects 10 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Google Chrome, Opensuse Leap, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server and 4 more.

How do I fix CVE-2018-18356?

Upgrade to a fixed version.

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-2018-18356 being exploited?

There is no known exploitation of CVE-2018-18356 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-2018-18356, GHSA-x2cw-grr7-xm95, UBUNTU-CVE-2018-18356.