Critical severity · published Jul 14, 2020
CVE-2020-13753
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
10.0
CVSS
3.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)3.3% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
FE
Fedora · Fedoraproject
31 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
UL
Ubuntu Linux · Canonical
18.04; 19.10; 20.04 · source: NVD
WE
Webkitgtk · Webkitgtk
before 2.28.3 · source: NVD
WW
Wpe Webkit · Wpewebkit
before 2.28.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13753
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-13753
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GER2ATKZXDHM7FFYJH67ZPNZZX5VOUVM/
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
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