Improper Input Validation Affecting webkit2gtk package, versions <2.28.3-2~deb10u1


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.34% (71st percentile)
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NVD
10 critical
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Red Hat
10 critical
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SUSE
6.3 medium

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  • Snyk ID SNYK-DEBIAN10-WEBKIT2GTK-575640
  • published 10 Jul 2020
  • disclosed 14 Jul 2020

How to fix?

Upgrade Debian:10 webkit2gtk to version 2.28.3-2~deb10u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream webkit2gtk package and not the webkit2gtk package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.