critical
10
CWE
20
Advisory Published
Updated

CVE-2020-13753: Input Validation

First published: Mon Jul 13 2020(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
WebKitGTK WebKitGTK<2.28.3
Wpewebkit Wpe Webkit<2.28.3
Fedoraproject Fedora=31
Debian Debian Linux=10.0
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=19.10
Canonical Ubuntu Linux=20.04
openSUSE Leap=15.1
ubuntu/webkit2gtk<2.28.3-0ubuntu0.18.04.1
2.28.3-0ubuntu0.18.04.1
ubuntu/webkit2gtk<2.28.3-0ubuntu0.19.10.1
2.28.3-0ubuntu0.19.10.1
ubuntu/webkit2gtk<2.28.3-0ubuntu0.20.04.1
2.28.3-0ubuntu0.20.04.1
debian/webkit2gtk
2.36.4-1~deb10u1
2.38.6-0+deb10u1
2.42.2-1~deb11u1
2.42.5-1~deb11u1
2.42.2-1~deb12u1
2.42.5-1~deb12u1
2.42.5-1
2.44.1-1
debian/wpewebkit
2.38.6-1~deb11u1
2.38.6-1
2.42.5-1
2.44.1-1

Remedy

https://trac.webkit.org/changeset/262368/webkit

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-13753?

    CVE-2020-13753 is a vulnerability in the bubblewrap sandbox of WebKitGTK and WPE WebKit that allows unauthorized access outside the sandbox.

  • How severe is CVE-2020-13753?

    CVE-2020-13753 has a severity value of 10, indicating a critical vulnerability.

  • Which software versions are affected by CVE-2020-13753?

    CVE-2020-13753 affects WebKitGTK versions 2.28.3 and earlier, and WPE WebKit versions 2.28.3 and earlier.

  • How can I fix CVE-2020-13753?

    To fix CVE-2020-13753, update WebKitGTK to version 2.28.3 or later, and WPE WebKit to version 2.28.3 or later.

  • Where can I find more information about CVE-2020-13753?

    You can find more information about CVE-2020-13753 on the following references: [http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html](http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00074.html), [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GER2ATKZXDHM7FFYJH67ZPNZZX5VOUVM/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GER2ATKZXDHM7FFYJH67ZPNZZX5VOUVM/), [https://security.gentoo.org/glsa/202007-11](https://security.gentoo.org/glsa/202007-11)

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