[USN-5561-1] GNOME Web vulnerabilities

[Marc Deslauriers]

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Ubuntu Security Notice USN-5561-1
August 10, 2022

epiphany-browser vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in GNOME Web.

Software Description:
- epiphany-browser: Intuitive GNOME web browser

Details:

It was discovered that GNOME Web incorrectly filtered certain strings. A
remote attacker could use this issue to perform cross-site scripting (XSS)
attacks. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-45085,
CVE-2021-45086, CVE-2021-45087)

It was discovered that GNOME Web incorrectly handled certain long page
titles. A remote attacker could use this issue to cause GNOME Web to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2022-29536)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
  epiphany-browser                42.1-1ubuntu1

Ubuntu 20.04 LTS:
  epiphany-browser                3.36.4-0ubuntu2

After a standard system update you need to restart GNOME Web to make all
the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5561-1
  CVE-2021-45085, CVE-2021-45086, CVE-2021-45087, CVE-2022-29536

Package Information:
  https://launchpad.net/ubuntu/+source/epiphany-browser/42.1-1ubuntu1
  https://launchpad.net/ubuntu/+source/epiphany-browser/3.36.4-0ubuntu2
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