National Cyber-Alert System
Vulnerability Summary for CVE-2009-1168
Original release date:07/30/2009
Last revised:08/08/2009
Source:
US-CERT/NIST
Overview
Cisco IOS 12.0(32)S12 through 12.0(32)S13 and 12.0(33)S3 through 12.0(33)S4, 12.0(32)SY8 through 12.0(32)SY9, 12.2(33)SXI1, 12.2XNC before 12.2(33)XNC2, 12.2XND before 12.2(33)XND1, and 12.4(24)T1; and IOS XE 2.3 through 2.3.1t and 2.4 through 2.4.0; when RFC4893 BGP routing is enabled, allows remote attackers to cause a denial of service (memory corruption and device reload) by using an RFC4271 peer to send an update with a long series of AS numbers, aka Bug ID CSCsy86021.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown
References to Advisories, Solutions, and Tools
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External Source: CISCO
Name: 20090729 Cisco IOS Software Border Gateway Protocol 4-Byte Autonomous System Number Vulnerabilities
Type: Advisory; Patch Information
External Source: VUPEN
Name: ADV-2009-2082
External Source: SECTRACK
Name: 1022619
External Source: BID
Name: 35862
External Source: SECUNIA
Name: 36046