National Cyber-Alert System
Vulnerability Summary for CVE-2003-0512
Original release date:08/27/2003
Last revised:03/04/2009
Source:
US-CERT/NIST
Overview
Cisco IOS 12.2 and earlier generates a "% Login invalid" message instead of prompting for a password when an invalid username is provided, which allows remote attackers to identify valid usernames on the system and conduct brute force password guessing, as reported for the Aironet Bridge.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
2.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information
References to Advisories, Solutions, and Tools
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US-CERT Vulnerability Note: VU#886796
Name: VU#886796
External Source: MISC
Name: http://www.vigilante.com/inetsecurity/advisories/VIGILANTE-2003002.htm
External Source: CISCO
Name: 20030724 Enumerating Locally Defined Users in Cisco IOS
External Source: OVAL
Name: oval:org.mitre.oval:def:5824
External Source: VULNWATCH
Name: 20030728 Cisco Aironet AP1100 Valid Account Disclosure Vulnerability
Type: Advisory
