CVE-2003-0190

medium

Description

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.

References

Advisories
More

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

http://marc.info/?l=bugtraq&m=106018677302607&w=2

http://marc.info/?l=bugtraq&m=105172058404810&w=2

https://github.com/ryanalieh/openSSH-scanner

https://github.com/bigb0x/OpenSSH-Scanner

https://github.com/bigb0x/SSH-Scanner

https://github.com/bigb0x/CVE-2024-6387

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A445

https://euvd.enisa.europa.eu/vulnerability/EUVD-2003-0186

http://www.turbolinux.com/security/TLSA-2003-31.txt

http://www.securityfocus.com/bid/7467

http://www.redhat.com/support/errata/RHSA-2003-224.html

http://www.redhat.com/support/errata/RHSA-2003-222.html

http://lists.grok.org.uk/pipermail/full-disclosure/2003-April/004815.html

http://lab.mediaservice.net/advisory/2003-01-openssh.txt

Details

Source: Mitre, NVD

Published: 2003-05-12

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N