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CVE-2003-0190

5.0 · MEDIUM

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…

Published May 12, 2003openbsdCWE-203EPSS 76.75%

Overview

CVE-2003-0190 is a medium-severity vulnerability affecting openbsd openssh. It was published on May 12, 2003 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from openbsd. Update openssh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
openbsdopenssh>= 0, < 3.6.1Affected
siemensscalance_x204rna_ecc_firmware>= 0, < 3.2.7Affected
siemensscalance_x204rna_firmware>= 0, < 3.2.7Affected

References

Reflab.mediaservice.net/advisory/2003-01-openssh.txtReflists.grok.org.uk/pipermail/full-disclosure/2003-April/004815.htmlRefmarc.info/?l=bugtraq&m=105172058404810&w=2Refmarc.info/?l=bugtraq&m=106018677302607&w=2Refwww.redhat.com/support/errata/RHSA-2003-222.htmlRefwww.redhat.com/support/errata/RHSA-2003-224.htmlRefwww.securityfocus.com/bid/7467Refwww.turbolinux.com/security/TLSA-2003-31.txtRefcert-portal.siemens.com/productcert/pdf/ssa-412672.pdfRefoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A445

How CyberStrike helps

Frequently asked questions

What is CVE-2003-0190?

CVE-2003-0190 is a medium-severity vulnerability affecting openbsd openssh. It was published on May 12, 2003 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2003-0190?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2003-0190?

Check the references section for vendor advisories and patches from openbsd. Update openssh to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2003-0190?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2003-0190 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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