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F5 Networks BIG-IP : libxml2 vulnerability (SOL15872)

medium Nessus Plugin ID 79732

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Synopsis

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

Description

parser.c in libxml2 before 2.9.2 does not properly prevent entity expansion even when entity substitution has been disabled, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted XML document containing a large number of nested entity references, a variant of the 'billion laughs' attack.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution SOL15872.

See Also

https://support.f5.com/csp/article/K15872

Plugin Details

Severity: Medium

ID: 79732

File Name: f5_bigip_SOL15872.nasl

Version: 1.9

Type: local

Published: 12/5/2014

Updated: 3/10/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.1

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:/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: 12/4/2014

Vulnerability Publication Date: 11/4/2014

Reference Information

CVE: CVE-2014-3660

BID: 70644