sshd in OpenSSH 3.6.1p2 and earlier, when PermitRootLogin is disabled and using PAM keyboard-interactive authentication, does not insert a…

Description

sshd in OpenSSH 3.6.1p2 and earlier, when PermitRootLogin is disabled and using PAM keyboard-interactive authentication, does not insert a delay after a root login attempt with the correct password, which makes it easier for remote attackers to use timing differences to determine if the password step of a multi-step authentication is successful, a different vulnerability than CVE-2003-0190.

Scores

EPSS (exploitation in 30 days)

5.6% · top 7.1% of all CVEs (3 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.6.

Weakness

• n/a
• CWE-362 (opens in a new tab)All about CWE-362 and its CVEs

Affected products

• n/a

  • affected n/a

References (6)

• 20030501 Re: OpenSSH/PAM timing attack allows remote users identification (opens in a new tab)mailing-listx_transferred
• 20030501 Re: OpenSSH/PAM timing attack allows remote users identification (opens in a new tab)mailing-listx_transferred
• 7482 (opens in a new tab)vdb-entryx_transferred
• 20030505 Re: OpenSSH/PAM timing attack allows remote users identification (opens in a new tab)mailing-listx_transferred
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=248747 (opens in a new tab)x_transferred
• https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf (opens in a new tab)x_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2003-1562](https://trackcve.app/badge/CVE-2003-1562.svg)](https://trackcve.app/cve/CVE-2003-1562)

Record last updated 16 Sept 2024, 19:56 UTC.