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CVE-2022-29536

Published: 20 April 2022

In GNOME Epiphany before 41.4 and 42.x before 42.2, an HTML document can trigger a client buffer overflow (in ephy_string_shorten in the UI process) via a long page title. The issue occurs because the number of bytes for a UTF-8 ellipsis character is not properly considered.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
epiphany-browser
Launchpad, Ubuntu, Debian
impish Ignored
(end of life)
bionic Needed

focal
Released (3.36.4-0ubuntu2)
xenial Needs triage

kinetic Not vulnerable
(42.4-1)
lunar Not vulnerable
(42.4-1)
trusty Ignored
(end of standard support)
upstream Needs triage

jammy
Released (42.1-1ubuntu1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H