OpenSSH-portable (OpenSSH) 3.6.1p1 and earlier with PAM support enabled immediately sends an error message when a user does not exist, which allows remote attackers to determine valid usernames via a timing attack.
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
Link | Tags |
---|---|
http://www.redhat.com/support/errata/RHSA-2003-222.html | vendor advisory broken link |
http://marc.info/?l=bugtraq&m=105172058404810&w=2 | third party advisory mailing list |
http://www.securityfocus.com/bid/7467 | patch vendor advisory exploit vdb entry third party advisory broken link |
http://marc.info/?l=bugtraq&m=106018677302607&w=2 | third party advisory mailing list |
http://www.redhat.com/support/errata/RHSA-2003-224.html | vendor advisory broken link |
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A445 | vdb entry signature broken link |
http://lab.mediaservice.net/advisory/2003-01-openssh.txt | broken link |
http://www.turbolinux.com/security/TLSA-2003-31.txt | vendor advisory broken link |
http://lists.grok.org.uk/pipermail/full-disclosure/2003-April/004815.html | mailing list broken link |
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf | third party advisory |