Detections
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Linux Distros Unpatched Vulnerability : CVE-2021-30666

high Nessus Plugin ID 223917

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3.
 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-2021-30666)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2021-30666

https://ubuntu.com/security/CVE-2021-30666

Plugin Details

Severity: High

ID: 223917

File Name: unpatched_CVE_2021_30666.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 3/5/2025

Updated: 9/2/2025

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

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

CVSS Score Source: CVE-2021-30666

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:wpewebkit, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:redhat:enterprise_linux:webkitgtk3-doc, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:centos:centos:webkitgtk3-devel, p-cpe:/a:redhat:enterprise_linux:webkitgtk, p-cpe:/a:redhat:enterprise_linux:libwebkit2gtk, p-cpe:/a:canonical:ubuntu_linux:webkit2gtk, p-cpe:/a:canonical:ubuntu_linux:webkitgtk, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:centos:centos:webkitgtk-devel, p-cpe:/a:centos:centos:webkitgtk3, p-cpe:/a:redhat:enterprise_linux:webkitgtk3-devel, p-cpe:/a:centos:centos:webkitgtk, p-cpe:/a:centos:centos:webkitgtk-doc, p-cpe:/a:redhat:enterprise_linux:webkitgtk-doc, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:libwebkit2gtk, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:canonical:ubuntu_linux:qtwebkit-source, p-cpe:/a:redhat:enterprise_linux:webkitgtk-devel, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:qtwebkit-opensource-src, p-cpe:/a:centos:centos:webkitgtk3-doc, p-cpe:/a:redhat:enterprise_linux:webkitgtk3

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 11/4/2020

CISA Known Exploited Vulnerability Due Dates: 11/17/2021

Reference Information

CVE: CVE-2021-30666