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FreeBSD : md4c -- DoS attack (f2b1da2e-6178-11ef-8a7d-b42e991fc52e)

medium Nessus Plugin ID 206182

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the f2b1da2e-6178-11ef-8a7d-b42e991fc52e advisory.

 [email protected] reports:
 md_analyze_line in md4c.c in md4c 0.4.7 allows attackers to trigger use of uninitialized memory, and cause a denial of service via a malformed Markdown document.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2021-30027

http://www.nessus.org/u?e83bbb13

Plugin Details

Severity: Medium

ID: 206182

File Name: freebsd_pkg_f2b1da2e617811ef8a7db42e991fc52e.nasl

Version: 1.1

Type: local

Published: 8/24/2024

Updated: 8/24/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-30027

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:md4c

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/23/2024

Vulnerability Publication Date: 4/29/2021

Reference Information

CVE: CVE-2021-30027