FreeBSD : subversion -- Unrestricted XML entity expansion in mod_dontdothat and Subversionclients using http(s) (ac256985-b6a9-11e6-a3bf-206a8a720317)

medium Nessus Plugin ID 95409

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The Apache Software Foundation reports :

The mod_dontdothat module of subversion and subversion clients using http(s):// are vulnerable to a denial-of-service attack, caused by exponential XML entity expansion. The attack targets XML parsers causing targeted process to consume excessive amounts of resources.
The attack is also known as the 'billions of laughs attack.'

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 95409

File Name: freebsd_pkg_ac256985b6a911e6a3bf206a8a720317.nasl

Version: 2.7

Type: local

Family: FreeBSD Local Security Checks

Published: 11/30/2016

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2016-8734

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:subversion18, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:subversion

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 11/29/2016

Vulnerability Publication Date: 11/29/2016

Reference Information

CVE: CVE-2016-8734

Detections

Analytics