Debian DSA-4684-1 : libreswan - security update

high Nessus Plugin ID 136590

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Synopsis

The remote Debian host is missing a security-related update.

Description

Stephan Zeisberg discovered that the libreswan IPsec implementation could be forced into a crash/restart via a malformed IKEv1 Informational Exchange packet, resulting in denial of service.

Solution

Upgrade the libreswan packages.

For the stable distribution (buster), this problem has been fixed in version 3.27-6+deb10u1.

Plugin Details

Severity: High

ID: 136590

File Name: debian_DSA-4684.nasl

Version: 1.4

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 5/14/2020

Updated: 1/18/2022

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-1763

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: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:libreswan

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2020

Vulnerability Publication Date: 5/12/2020

Reference Information

CVE: CVE-2020-1763

DSA: 4684

Detections

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