National Cyber-Alert System
Vulnerability Summary for CVE-2002-0639
Original release date:07/03/2002
Last revised:09/10/2008
Source:
US-CERT/NIST
Overview
Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication (ChallengeResponseAuthentication) when OpenSSH is using SKEY or BSD_AUTH authentication.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
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 (05/15/2008)
-
Not vulnerable. This issue did not affect the versions of OpenSSH as shipped with Red Hat Enterprise Linux 3 or later.
This issue did not affect the OpenSSL packages as shipped with Red Hat Enterprise Linux 2.1 as they were not compiled with S/Key or BSD_AUTH support. The upstream patch for this issue and CVE-2002-0640 was included in an errata so that users recompiling OpenSSL with support for those authentication methods would also be protected:
https://rhn.redhat.com/errata/RHSA-2002-131.html
References to Advisories, Solutions, and Tools
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US-CERT Vulnerability Note: VU#369347
Name: VU#369347
CERT/CC Advisory: CA-2002-18
Name: CA-2002-18
External Source: HP
Name: HPSBUX0206-195
External Source: BID
Name: 5093
External Source: OSVDB
Name: 6245
External Source: MANDRAKE
Name: MDKSA-2002:040
External Source: ENGARDE
Name: ESA-20020702-016
External Source: XF
Name: openssh-challenge-response-bo(9169)
External Source: DEBIAN
Name: DSA-134
External Source: BUGTRAQ
Name: 20020627 How to reproduce OpenSSH Overflow.
External Source: BUGTRAQ
Name: 20020626 Revised OpenSSH Security Advisory (adv.iss)
External Source: BUGTRAQ
Name: 20020626 OpenSSH Security Advisory (adv.iss)
External Source: CONECTIVA
Name: CLA-2002:502
External Source: BUGTRAQ
Name: 20020626 [OpenPKG-SA-2002.005] OpenPKG Security Advisory (openssh)
External Source: CALDERA
Name: CSSA-2002-030.0
