CVE-2020-13753

high-risk
Published 2020-07-14

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.

Do I need to act?

~
1.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
10
CVSS 10.0/10 Critical
NETWORK / LOW complexity

Affected Products (8)

Affected Vendors

Debian Canonical Fedoraproject Opensuse Webkitgtk Wpewebkit

References (14)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Third Party Advisory https://security.gentoo.org/glsa/202007-11
Patch https://trac.webkit.org/changeset/262368/webkit
Third Party Advisory https://usn.ubuntu.com/4422-1/
Third Party Advisory https://www.debian.org/security/2020/dsa-4724
Mailing List https://www.openwall.com/lists/oss-security/2020/07/10/1
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Third Party Advisory https://security.gentoo.org/glsa/202007-11
Patch https://trac.webkit.org/changeset/262368/webkit
Third Party Advisory https://usn.ubuntu.com/4422-1/
Third Party Advisory https://www.debian.org/security/2020/dsa-4724
Mailing List https://www.openwall.com/lists/oss-security/2020/07/10/1
51
/ 100
high-risk
Severity 33/34 · Critical
Exploitability 4/34 · Minimal
Exposure 14/34 · Moderate