Vulnerability in OpenBSD OpenSSH

CVE-2003-1562

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.

Vulnerability class: Race Condition

Published · last modified .

CVSS v2 metric

CVSS v2 base score 7.6 (High). Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.056 (92.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2003-1562: held from 0.056 to 0.056.

EPSS over last 30 days · oldest: 0.056 · newest: 0.056 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2003-1562?
CVE-2003-1562 is a vulnerability in OpenBSD OpenSSH, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). Published 2003-12-31.
Is CVE-2003-1562 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.