USN-5561-1: GNOME Web vulnerabilities

Releases

• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• 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

• epiphany-browser - 42.1-1ubuntu1

Ubuntu 20.04

• epiphany-browser - 3.36.4-0ubuntu2

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

References

• CVE-2022-29536
• CVE-2021-45086
• CVE-2021-45087
• CVE-2021-45085