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F5 Networks BIG-IP : Expat XML parser vulnerability (K65460334)

medium Nessus Plugin ID 100112

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Synopsis

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

Description

Expat, when used in a parser that has not called XML_SetHashSalt or passed it a seed of 0, makes it easier for context-dependent attackers to defeat cryptographic protection mechanisms via vectors involving use of the srand function. (CVE-2012-6702)

Impact

An attacker may be able to defeat cryptographic protection mechanisms using the srand function.

This vulnerability exists for iControl Simple Object Access Protocol (SOAP) in the rare instance when a client uses the Expat parser provided in the iControl library and, within the same process, calls srand() to generate cryptographic values.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K65460334.

See Also

https://support.f5.com/csp/article/K65460334

Plugin Details

Severity: Medium

ID: 100112

File Name: f5_bigip_SOL65460334.nasl

Version: 3.4

Type: local

Published: 5/11/2017

Updated: 1/4/2019

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: cpe:/a:f5:big-ip_access_policy_manager, cpe:/a:f5:big-ip_advanced_firewall_manager, cpe:/a:f5:big-ip_application_acceleration_manager, cpe:/a:f5:big-ip_application_security_manager, cpe:/a:f5:big-ip_application_visibility_and_reporting, cpe:/a:f5:big-ip_link_controller, cpe:/a:f5:big-ip_local_traffic_manager, cpe:/a:f5:big-ip_policy_enforcement_manager, cpe:/h:f5:big-ip

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/6/2016

Reference Information

CVE: CVE-2012-6702