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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
 

OpenSSH Affected

Updated:  September 24, 2003

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

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.


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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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