Detections
Analytics

Amazon Linux AMI : subversion / mod_dav_svn (ALAS-2017-794)

medium Nessus Plugin ID 97024

Language:

Synopsis

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

Description

It was discovered that Subversion's mod_dontdothat module and Subversion clients using http(s):// are vulnerable to a denial-of-service attack caused by exponential XML entity expansion.
An authenticated remote attacker can cause denial-of-service conditions on the server using mod_dontdothat by sending a specially crafted REPORT request. The attack does not require access to a particular repository.

Solution

Run 'yum update subversion' to update your system.

Run 'yum update mod_dav_svn' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2017-794.html

Plugin Details

Severity: Medium

ID: 97024

File Name: ala_ALAS-2017-794.nasl

Version: 3.4

Type: local

Agent: unix

Published: 2/7/2017

Updated: 4/18/2018

Supported Sensors: Frictionless Assessment AWS, 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: 4

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

CVSS v3

Risk Factor: Medium

Base Score: 6.5

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:subversion-libs, p-cpe:/a:amazon:linux:subversion-debuginfo, p-cpe:/a:amazon:linux:subversion-python26, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:subversion-ruby, p-cpe:/a:amazon:linux:subversion-python27, p-cpe:/a:amazon:linux:subversion-javahl, p-cpe:/a:amazon:linux:subversion-devel, p-cpe:/a:amazon:linux:mod_dav_svn, p-cpe:/a:amazon:linux:subversion-perl, p-cpe:/a:amazon:linux:subversion-tools, p-cpe:/a:amazon:linux:mod24_dav_svn, p-cpe:/a:amazon:linux:mod_dav_svn-debuginfo, p-cpe:/a:amazon:linux:subversion

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

Patch Publication Date: 2/6/2017

Reference Information

CVE: CVE-2016-8734

ALAS: 2017-794