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Amazon Linux AMI : keepalived (ALAS-2020-1414)

medium Nessus Plugin ID 139548

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Synopsis

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

Description

keepalived 2.0.8 didn't check for pathnames with symlinks when writing data to a temporary file upon a call to PrintData or PrintStats. This allowed local users to overwrite arbitrary files if fs.protected_symlinks is set to 0, as demonstrated by a symlink from /tmp/keepalived.data or /tmp/keepalived.stats to /etc/passwd.
(CVE-2018-19044 )

Solution

Run 'yum update keepalived' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2020-1414.html

Plugin Details

Severity: Medium

ID: 139548

File Name: ala_ALAS-2020-1414.nasl

Version: 1.3

Type: local

Agent: unix

Published: 8/13/2020

Updated: 2/26/2024

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: Low

Base Score: 3.3

Temporal Score: 2.6

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

CVSS Score Source: CVE-2018-19044

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.2

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:keepalived, p-cpe:/a:amazon:linux:keepalived-debuginfo, cpe:/o:amazon:linux

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: 8/12/2020

Vulnerability Publication Date: 11/8/2018

Reference Information

CVE: CVE-2018-19044

ALAS: 2020-1414