Debian DSA-4975-1 : webkit2gtk - security update

high Nessus Plugin ID 153572
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 remote Debian 10 / 11 host has packages installed that are affected by a vulnerability as referenced in the dsa-4975 advisory.

- A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited. (CVE-2021-30858)

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

Solution

Upgrade the webkit2gtk packages.

For the stable distribution (bullseye), this problem has been fixed in version 2.32.4-1~deb11u1.

See Also

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

https://www.debian.org/security/2021/dsa-4975

https://security-tracker.debian.org/tracker/CVE-2021-30858

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

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

Plugin Details

Severity: High

ID: 153572

File Name: debian_DSA-4975.nasl

Version: 1.3

Type: local

Agent: unix

Published: 9/22/2021

Updated: 9/24/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2021-30858

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

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

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:gir1.2-javascriptcoregtk-4.0, p-cpe:/a:debian:debian_linux:gir1.2-webkit2-4.0, p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-18, p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-bin, p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-dev, p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-37, p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-37-gtk2, p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-dev, p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-doc, p-cpe:/a:debian:debian_linux:webkit2gtk-driver, cpe:/o:debian:debian_linux:10.0, cpe:/o:debian:debian_linux:11.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/20/2021

Vulnerability Publication Date: 8/24/2021

Reference Information

CVE: CVE-2021-30858

IAVA: 2021-A-0414-S