Debian DSA-4877-1 : webkit2gtk - security update

critical Nessus Plugin ID 148236
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Debian host is missing a security-related update.

Description

The following vulnerabilities have been discovered in the webkit2gtk web engine :

- CVE-2020-27918 Liu Long discovered that processing maliciously crafted web content may lead to arbitrary code execution.

- CVE-2020-29623 Simon Hunt discovered that users may be unable to fully delete their browsing history under some circumstances.

- CVE-2021-1765 Eliya Stein discovered that maliciously crafted web content may violate iframe sandboxing policy.

- CVE-2021-1789 @S0rryMybad discovered that processing maliciously crafted web content may lead to arbitrary code execution.

- CVE-2021-1799 Gregory Vishnepolsky, Ben Seri and Samy Kamkar discovered that a malicious website may be able to access restricted ports on arbitrary servers.

- CVE-2021-1801 Eliya Stein discovered that processing maliciously crafted web content may lead to arbitrary code execution.

- CVE-2021-1870 An anonymous researcher discovered that processing maliciously crafted web content may lead to arbitrary code execution.

Solution

Upgrade the webkit2gtk packages.

For the stable distribution (buster), these problems have been fixed in version 2.30.6-1~deb10u1.

See Also

https://security-tracker.debian.org/tracker/CVE-2020-27918

https://security-tracker.debian.org/tracker/CVE-2020-29623

https://security-tracker.debian.org/tracker/CVE-2021-1765

https://security-tracker.debian.org/tracker/CVE-2021-1789

https://security-tracker.debian.org/tracker/CVE-2021-1799

https://security-tracker.debian.org/tracker/CVE-2021-1801

https://security-tracker.debian.org/tracker/CVE-2021-1870

https://security-tracker.debian.org/tracker/source-package/webkit2gtk

https://packages.debian.org/source/buster/webkit2gtk

https://www.debian.org/security/2021/dsa-4877

Plugin Details

Severity: Critical

ID: 148236

File Name: debian_DSA-4877.nasl

Version: 1.6

Type: local

Agent: unix

Published: 3/30/2021

Updated: 1/18/2022

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2021-1870

VPR

Risk Factor: Critical

Score: 9.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:H/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

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

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:webkit2gtk, cpe:/o:debian:debian_linux:10.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/27/2021

Vulnerability Publication Date: 12/8/2020

Reference Information

CVE: CVE-2020-27918, CVE-2020-29623, CVE-2021-1765, CVE-2021-1789, CVE-2021-1799, CVE-2021-1801, CVE-2021-1870

DSA: 4877