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Amazon Linux 2 : libmicrohttpd (ALAS-2023-2135)

medium Nessus Plugin ID 178528

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of libmicrohttpd installed on the remote host is prior to 0.9.33-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2135 advisory.

 GNU libmicrohttpd before 0.9.76 allows remote DoS (Denial of Service) due to improper parsing of a multipart/form-data boundary in the postprocessor.c MHD_create_post_processor() method. This allows an attacker to remotely send a malicious HTTP POST packet that includes one or more '\0' bytes in a multipart/form-data boundary field, which - assuming a specific heap layout - will result in an out-of- bounds read and a crash in the find_boundary() function. (CVE-2023-27371)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update libmicrohttpd' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2023-2135.html

https://alas.aws.amazon.com/cve/html/CVE-2023-27371.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: Medium

ID: 178528

File Name: al2_ALAS-2023-2135.nasl

Version: 1.2

Type: local

Agent: unix

Published: 7/20/2023

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.2

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

CVSS Score Source: CVE-2023-27371

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libmicrohttpd-debuginfo, p-cpe:/a:amazon:linux:libmicrohttpd-devel, p-cpe:/a:amazon:linux:libmicrohttpd, p-cpe:/a:amazon:linux:libmicrohttpd-doc, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/17/2023

Vulnerability Publication Date: 2/28/2023

Reference Information

CVE: CVE-2023-27371