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RHEL 8 : libreswan (RHSA-2023:3095)

medium Nessus Plugin ID 175846

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Synopsis

The remote Red Hat host is missing a security update for libreswan.

Description

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2023:3095 advisory.

 Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

 Security Fix(es):

 * libreswan: remote DoS via crafted TS payload with an incorrect selector length (CVE-2023-23009)

 For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

 Bug Fix(es):

 * authby=rsasig fails in FIPS policy (BZ#2187647)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 RHEL libreswan package based on the guidance in RHSA-2023:3095.

See Also

http://www.nessus.org/u?85622724

https://access.redhat.com/security/updates/classification/#moderate

https://bugzilla.redhat.com/show_bug.cgi?id=2173610

https://bugzilla.redhat.com/show_bug.cgi?id=2187647

https://access.redhat.com/errata/RHSA-2023:3095

Plugin Details

Severity: Medium

ID: 175846

File Name: redhat-RHSA-2023-3095.nasl

Version: 1.5

Type: local

Agent: unix

Published: 5/16/2023

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-23009

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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:redhat:enterprise_linux:libreswan, cpe:/o:redhat:rhel_eus:8.8, cpe:/o:redhat:enterprise_linux:8

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/16/2023

Vulnerability Publication Date: 2/21/2023

Reference Information

CVE: CVE-2023-23009

CWE: 20

RHSA: 2023:3095