CVE-2020-13753 Security feature bypass in n/a

What is CVE-2020-13753?

CVE-2020-13753 is a critical vulnerability in Canonical Ubuntu Linux, published on 14 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The bubblewrap sandbox of WebKitGTK and WPE WebKit, prior to 2.28.3, failed to properly block access to CLONE_NEWUSER and the TIOCSTI ioctl. CLONE_NEWUSER could potentially be used to confuse xdg-desktop-portal, which allows access outside the sandbox. TIOCSTI can be used to directly execute commands outside the sandbox by writing to the controlling terminal's input buffer, similar to CVE-2017-5226.

Weakness: CWE-20

Which versions are affected by CVE-2020-13753?

It affects 6 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Opensuse Leap, Webkitgtk Webkitgtk, Wpewebkit Wpe Webkit.

How do I fix CVE-2020-13753?

Upgrade to a fixed version.

Is CVE-2020-13753 being exploited?

There is no known exploitation of CVE-2020-13753 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-2020-13753, GHSA-7vvx-4whv-jg73, UBUNTU-CVE-2020-13753.