F5 Networks BIG-IP : XML vulnerability (K03244804)

high Nessus Plugin ID 124206
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Synopsis

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

Description

XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD. (CVE-2017-9233)

Impact

BIG-IP

Administrative interfaces, such as iControl SOAP, are vulnerable to a denial-of-service (DoS) attack if a malicious XML document is uploaded to and processed by the BIG-IP system. The XML process in the data plane is not affected.

BIG-IQ

This XML external entity vulnerability may allow attackers to put the parser in an infinite loop using a malformed external entity definition.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K03244804.

See Also

https://support.f5.com/csp/article/K03244804

Plugin Details

Severity: High

ID: 124206

File Name: f5_bigip_SOL03244804.nasl

Version: 1.4

Type: local

Published: 4/22/2019

Updated: 3/9/2020

Dependencies: f5_bigip_detect.nbin

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: 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_global_traffic_manager, cpe:/a:f5:big-ip_link_controller, cpe:/a:f5:big-ip_local_traffic_manager, cpe:/a:f5:big-ip_policy_enforcement_manager, cpe:/a:f5:big-ip_webaccelerator, 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: 3/27/2019

Vulnerability Publication Date: 7/25/2017

Reference Information

CVE: CVE-2017-9233