CVSS 3.1
10.0 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HCVE-2020-13753
Critical (10.0). EPSS 3.3% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 3.3% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- debian:debian_linux
- fedoraproject:fedora
- opensuse:leap
- webkitgtk:webkitgtk
- wpewebkit:wpe_webkit
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GER2ATKZXDHM7FFYJH67ZPNZZX5VOUVM/
- https://security.gentoo.org/glsa/202007-11
- https://trac.webkit.org/changeset/262368/webkit
- https://usn.ubuntu.com/4422-1/