CVE DATABASE / CVE-2003-0190
CVE-2003-0190
CVSS 5 · MEDIUM
Summary
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.
CVSS 2.0 breakdown
| Base score | 5 (MEDIUM) |
| Vector | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Confidentiality | PARTIAL |
| Integrity | NONE |
| Availability | NONE |
Weakness type (CWE)
Affected products
Openbsd opensshOpenpkg openpkgSiemens scalance x204rna ecc firmwareSiemens scalance x204rna eccSiemens scalance x204rna firmwareSiemens scalance x204rna
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References
- http://lab.mediaservice.net/advisory/2003-01-openssh.txt
- http://lists.grok.org.uk/pipermail/full-disclosure/2003-April/004815.html
- http://marc.info/?l=bugtraq&m=105172058404810&w=2
- http://marc.info/?l=bugtraq&m=106018677302607&w=2
- http://www.redhat.com/support/errata/RHSA-2003-222.html
- http://www.redhat.com/support/errata/RHSA-2003-224.html
- http://www.securityfocus.com/bid/7467
- http://www.turbolinux.com/security/TLSA-2003-31.txt
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A445
Data: NIST NVD. NVD last modified 2026-04-16. Always verify against the vendor advisory before acting.