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Ubuntu 20.04 LTS / 22.04 LTS : GNOME Web vulnerabilities (USN-5561-1)

medium Nessus Plugin ID 164146

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5561-1 advisory.

 - XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an about: page, as demonstrated by ephy-about:overview when a user visits an XSS payload page often enough to place that page on the Most Visited list. (CVE-2021-45085)

 - XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 because a server's suggested_filename is used as the pdf_name value in PDF.js. (CVE-2021-45086)

 - XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 when View Source mode or Reader mode is used, as demonstrated by a a page title. (CVE-2021-45087)

 - 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. (CVE-2022-29536)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected epiphany-browser and / or epiphany-browser-data packages.

See Also

https://ubuntu.com/security/notices/USN-5561-1

Plugin Details

Severity: Medium

ID: 164146

File Name: ubuntu_USN-5561-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 8/16/2022

Updated: 7/12/2023

Supported Sensors: Frictionless Assessment Azure, Nessus Agent, Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2021-45087

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:epiphany-browser, p-cpe:/a:canonical:ubuntu_linux:epiphany-browser-data

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/10/2022

Vulnerability Publication Date: 12/16/2021

Reference Information

CVE: CVE-2021-45085, CVE-2021-45086, CVE-2021-45087, CVE-2022-29536

USN: 5561-1