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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
bionic Needed

focal
Released (3.36.4-0ubuntu2)
impish Ignored
(reached end-of-life)
jammy
Released (42.1-1ubuntu1)
kinetic Not vulnerable
(42.4-1)
trusty Ignored
(out of standard support)
upstream Needs triage

xenial Needs triage

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