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CVE-2003-0786: Openbsd Openssh: Privilege escalation

CVE-2003-0786 has a CVSS v2 base score of 10.0 (the maximum on that scale) and affects Openbsd Openssh. Per its scoring, it can be exploited over the network, without authentication. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

The SSH1 PAM challenge response authentication in OpenSSH 3.7.1 and 3.7.1p1, when Privilege Separation is disabled, does not check the result of the authentication attempt, which can allow remote attackers to gain privileges.

Severity breakdown

CVSS v2.0 10.0: AV:N/AC:L/Au:N/C:C/I:C/A:C

• Access vector: Network. Exploitable remotely over the network.
• Access complexity: Low. No special conditions are required.
• Authentication: None. No authentication is needed.
• Confidentiality impact: Complete. Total information disclosure.
• Integrity impact: Complete. Total loss of integrity.
• Availability impact: Complete. Total shutdown of the component.

Affected products

• Openbsd Openssh: 3.7.1; 3.7.1p1

References

• http://www.kb.cert.org/vuls/id/602204
• http://lists.grok.org.uk/pipermail/full-disclosure/2003-September/010812.html
• http://www.openssh.com/txt/sshpam.adv
• http://www.securityfocus.com/archive/1/338616
• http://www.securityfocus.com/archive/1/338617
• http://www.securityfocus.com/bid/8677