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Debian Security Advisory DSA-5030-1                   [email protected]
https://www.debian.org/security/                           Alberto Garcia
December 23, 2021                     https://www.debian.org/security/faq
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Package        : webkit2gtk
CVE ID         : CVE-2021-30887 CVE-2021-30890

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

CVE-2021-30887

    Narendra Bhati discovered that processing maliciously crafted web
    content may lead to unexpectedly unenforced Content Security
    Policy.

CVE-2021-30890

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

For the oldstable distribution (buster), these problems have been fixed
in version 2.34.3-1~deb10u1.

For the stable distribution (bullseye), these problems have been fixed in
version 2.34.3-1~deb11u1.

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/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: [email protected]