Amazon Linux 2 : librelp (ALAS-2018-998)

critical Nessus Plugin ID 109180

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Synopsis

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

Description

Stack-based buffer overflow in relpTcpChkPeerName function in src/tcp.c :

rsyslog librelp version 1.2.14 and earlier contains a Buffer Overflow vulnerability in the checking of x509 certificates from a peer that can result in Remote code execution. This attack appear to be exploitable a remote attacker that can connect to rsyslog and trigger a stack buffer overflow by sending a specially crafted x509 certificate. (CVE-2018-1000140)

Solution

Run 'yum update librelp' to update your system.

Plugin Details

Severity: Critical

ID: 109180

File Name: al2_ALAS-2018-998.nasl

Version: 1.4

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 4/20/2018

Updated: 8/31/2018

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:librelp, p-cpe:/a:amazon:linux:librelp-debuginfo, p-cpe:/a:amazon:linux:librelp-devel, cpe:/o:amazon:linux:2

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

Patch Publication Date: 4/19/2018

Reference Information

CVE: CVE-2018-1000140

ALAS: 2018-998

IAVA: 2018-A-0202

Detections

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