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Test ID:1.3.6.1.4.1.25623.1.0.103818
Category:CISCO
Title:Cisco NX-OS Software BGP Regex Vulnerability (Cisco-SA-20130917-CVE-2013-1121)
Summary:A vulnerability in the Border Gateway Protocol (BGP) code of; Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the affected device; to reload.
Description:Summary:
A vulnerability in the Border Gateway Protocol (BGP) code of
Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the affected device
to reload.

Vulnerability Insight:
The vulnerability is due to an issue with the regex engine used
when processing complex regular expressions. An attacker could exploit this vulnerability by
injecting specific autonomous system (AS) path sets. If the affected device has a complex regular
expression applied to the inbound routes, the vulnerability may be triggered.

Vulnerability Impact:
An exploit could allow the attacker to trigger Cisco NX-OS
Software to restart.

Affected Software/OS:
Cisco Nexus 7000 Series running on NX-OS.

Solution:
See the referenced vendor advisory for a solution.

CVSS Score:
5.4

CVSS Vector:
AV:N/AC:H/Au:N/C:N/I:N/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-1121
Cisco Security Advisory: 20130917 Cisco NX-OS Software BGP Regex Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1121
CopyrightCopyright (C) 2013 Greenbone Networks GmbH

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