Detections
Analytics
Amazon Linux 2 : c-ares (ALAS-2023-2127)
high Nessus Plugin ID 178555
Language:
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of c-ares installed on the remote host is prior to 1.10.0-3. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2127 advisory.- c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1. (CVE-2023-32067)
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 c-ares' to update your system.See Also
https://alas.aws.amazon.com/AL2/ALAS-2023-2127.html
Plugin Details
Severity: High
ID: 178555
File Name: al2_ALAS-2023-2127.nasl
Version: 1.0
Type: local
Agent: unix
Published: 7/20/2023
Updated: 7/20/2023
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2023-32067
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
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:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:c-ares, p-cpe:/a:amazon:linux:c-ares-debuginfo, p-cpe:/a:amazon:linux:c-ares-devel, cpe:/o:amazon:linux:2
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 7/17/2023
Vulnerability Publication Date: 5/24/2023
Reference Information
CVE: CVE-2023-32067