CVE-2018-5159 Integer overflow in Firefox

What is CVE-2018-5159?

CVE-2018-5159 is a critical vulnerability in Canonical Ubuntu Linux, published on 11 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An integer overflow can occur in the Skia library due to 32-bit integer use in an array without integer overflow checks, resulting in possible out-of-bounds writes. This could lead to a potentially exploitable crash triggerable by web content. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.

Weakness: CWE-787, CWE-190

Which versions are affected by CVE-2018-5159?

It affects 11 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Mozilla Firefox, Mozilla Thunderbird, Mozilla Thunderbird Esr, Redhat Enterprise Linux Desktop and 5 more.

How do I fix CVE-2018-5159?

Upgrade to a fixed version.

Is CVE-2018-5159 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-5159 exists.

Public exploit code: 2 Exploit-DB entries.

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-2018-5159, GHSA-qchp-2hvj-gj3q, UBUNTU-CVE-2018-5159.