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F5 Networks BIG-IP : Expat vulnerabilities (K16949)

medium Nessus Plugin ID 86013

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Synopsis

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

Description

CVE-2012-0876

The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML file with many identifiers with the same value.

CVE-2012-1148 Memory leak in the poolGrow function in expat/lib/xmlparse.c in expat before 2.1.0 allows context-dependent attackers to cause a denial of service (memory consumption) via a large number of crafted XML files that cause improperly-handled reallocation failures when expanding entities.

Impact

These vulnerabilities allow context-dependent attackers to cause a denial-of-service (DoS) (CPU and/or memory consumption) by way of XML files.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K16949.

See Also

https://support.f5.com/csp/article/K16949

Plugin Details

Severity: Medium

ID: 86013

File Name: f5_bigip_SOL16949.nasl

Version: 2.8

Type: local

Published: 9/18/2015

Updated: 3/10/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.4

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

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_wan_optimization_manager, cpe:/a:f5:big-ip_webaccelerator, cpe:/h:f5:big-ip, cpe:/h:f5:big-ip_protocol_security_manager

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/10/2015

Vulnerability Publication Date: 7/3/2012

Reference Information

CVE: CVE-2012-0876, CVE-2012-1148

BID: 52379