CVE-2020-13753
10.0
CRITICAL · CVSS 3.1 · EPSS 3.3% (pctl 88)
In your normal cycle
Critical by CVSS (10), but no sign of active exploitation.
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.
Scoring
| CVSS | 10.0 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 3.27% — more likely to be exploited than 88% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-07-14 |
| Last modified | 2026-06-17 |
Affected (6)
| Vendor | Product |
|---|---|
| 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/
- https://www.debian.org/security/2020/dsa-4724
- https://www.openwall.com/lists/oss-security/2020/07/10/1
- 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/
- https://www.debian.org/security/2020/dsa-4724
- https://www.openwall.com/lists/oss-security/2020/07/10/1
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