CVE-2020-13753

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.

Category

10.0
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.17% Top 25%
Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory webkit.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://trac.webkit.org/changeset/262368/webkit patch vendor advisory
https://www.openwall.com/lists/oss-security/2020/07/10/1 third party advisory mailing list
https://www.debian.org/security/2020/dsa-4724 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GER2ATKZXDHM7FFYJH67ZPNZZX5VOUVM/ vendor advisory
https://usn.ubuntu.com/4422-1/ third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html mailing list third party advisory vendor advisory
https://security.gentoo.org/glsa/202007-11 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-13753?
CVE-2020-13753 has been scored as a critical severity vulnerability.
How to fix CVE-2020-13753?
To fix CVE-2020-13753, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-13753 being actively exploited in the wild?
It is possible that CVE-2020-13753 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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