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CERT Coordination Center

Portable OpenSSH server PAM conversion stack corruption

Vulnerability Note VU#209807

Original Release Date: 2003-09-24 | Last Revised: 2003-09-24

Overview

There is a vulnerability in the Portable OpenSSH server that may corrupt the PAM conversion stack.

Description

The Portable OpenSSH server contains a vulnerability that may permit an attacker to corrupt the PAM conversion stack. Versions 3.7p1 and 3.7.1p1 are affected. Note that the OpenBSD-specific releases are not affected by this issue.

Impact

The complete impact of this vulnerability is not yet known, but may lead to privilege escalation, or a denial of service.

Solution

OpenSSH has announced version 3.7.1p2 to resolve this issue.

This issue can be mitigated by not using PAM. Set "UsePAM no" in sshd_config.

Vendor Information

209807
 
Affected   Unknown   Unaffected

OpenSSH

Updated:  September 24, 2003

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Acknowledgements

Thanks to OpenSSH for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

CVE IDs: CVE-2003-0787
Severity Metric: 1.50
Date Public: 2003-09-23
Date First Published: 2003-09-24
Date Last Updated: 2003-09-24 15:06 UTC
Document Revision: 2

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