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Debian Security Advisory DSA-4627-1                   security@debian.org
https://www.debian.org/security/                           Alberto Garcia
February 17, 2020                     https://www.debian.org/security/faq
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Package        : webkit2gtk
CVE ID         : CVE-2020-3862 CVE-2020-3864 CVE-2020-3865 CVE-2020-3867 
                 CVE-2020-3868

The following vulnerabilities have been discovered in the webkit2gtk
web engine:

CVE-2020-3862

    Srikanth Gatta discovered that a malicious website may be able to
    cause a denial of service.

CVE-2020-3864

    Ryan Pickren discovered that a DOM object context may not have had
    a unique security origin.

CVE-2020-3865

    Ryan Pickren discovered that a top-level DOM object context may
    have incorrectly been considered secure.

CVE-2020-3867

    An anonymous researcher discovered that processing maliciously
    crafted web content may lead to universal cross site scripting.

CVE-2020-3868

    Marcin Towalski discovered that processing maliciously crafted web
    content may lead to arbitrary code execution.

For the stable distribution (buster), these problems have been fixed in
version 2.26.4-1~deb10u1.

We recommend that you upgrade your webkit2gtk packages.

For the detailed security status of webkit2gtk please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/webkit2gtk

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org