National Cyber-Alert System
Vulnerability Summary for CVE-2003-1562
Original release date:12/31/2003
Last revised:09/05/2008
Source:
US-CERT/NIST
Overview
sshd in OpenSSH 3.6.1p2 and earlier, when PermitRootLogin is disabled and using PAM keyboard-interactive authentication, does not insert a delay after a root login attempt with the correct password, which makes it easier for remote attackers to use timing differences to determine if the password step of a multi-step authentication is successful, a different vulnerability than CVE-2003-0190.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type:Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
Official Statement from Red Hat (08/11/2008)
The risks associated with fixing this bug are greater than the low severity security risk. We therefore currently have no plans to fix this flaw in Red Hat Enterprise Linux 2.1 and 3 which is in maintenance mode.
References to Advisories, Solutions, and Tools
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External Source: BID
Name: 7482
External Source: BUGTRAQ
Name: 20030505 Re: OpenSSH/PAM timing attack allows remote users identification
External Source: BUGTRAQ
Name: 20030501 Re: OpenSSH/PAM timing attack allows remote users identification
External Source: BUGTRAQ
Name: 20030501 Re: OpenSSH/PAM timing attack allows remote users identification
External Source: CONFIRM
Name: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=248747