Detections
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Amazon Linux 2 : curl (ALAS-2023-2271)

high Nessus Plugin ID 182626

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Synopsis

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

Description

The version of curl installed on the remote host is prior to 8.3.0-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2271 advisory.

 - When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl headers API. However, curl did not have a limit in how many or how large headers it would accept in a response, allowing a malicious server to stream an endless series of headers and eventually cause curl to run out of heap memory. (CVE-2023-38039)

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 curl' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2023-2271.html

https://alas.aws.amazon.com/cve/html/CVE-2023-38039.html

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

Plugin Details

Severity: High

ID: 182626

File Name: al2_ALAS-2023-2271.nasl

Version: 1.2

Type: local

Agent: unix

Published: 10/5/2023

Updated: 10/12/2023

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: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2023-38039

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/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:libcurl, p-cpe:/a:amazon:linux:libcurl-devel, p-cpe:/a:amazon:linux:curl-debuginfo, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:curl

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: 9/27/2023

Vulnerability Publication Date: 9/13/2023

Reference Information

CVE: CVE-2023-38039

IAVA: 2023-A-0485-S