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F5 Networks BIG-IP : perl-XML-Twig vulnerability (K08383757)

critical Nessus Plugin ID 105467

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

perl-XML-Twig: The option to `expand_external_ents`, documented as controlling external entity expansion in XML::Twig does not work.
External entities are always expanded, regardless of the option's setting. (CVE-2016-9180)

Impact

An authenticated user with a BIG-IP ASM administrative role, such as Policy Editor, may be able to craft an XML message which, when processed by the ASMConfig process using perl-XML-Twig , maycause a denial of service (DoS) orpotentially aninformation disclosure.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K08383757.

See Also

https://support.f5.com/csp/article/K08383757

Plugin Details

Severity: Critical

ID: 105467

File Name: f5_bigip_SOL08383757.nasl

Version: 3.7

Type: local

Published: 12/28/2017

Updated: 3/9/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/a:f5:big-ip_application_security_manager, cpe:/h:f5:big-ip

Required KB Items: Host/local_checks_enabled, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version

Exploit Ease: No known exploits are available

Patch Publication Date: 2/10/2017

Vulnerability Publication Date: 12/22/2016

Reference Information

CVE: CVE-2016-9180