DEBIAN-CVE-2015-5600

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2015-5600
Published: 03 Aug 2015, 01:59
Last modified:28 May 2026, 09:00

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8.1 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Aug 2015, 01:59
Published
Vulnerability first disclosed
28 May 2026, 09:00
Last Modified
Vulnerability information updated

Description

The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processing of keyboard-interactive devices within a single connection, which makes it easier for remote attackers to conduct brute-force attacks or cause a denial of service (CPU consumption) via a long and duplicative list in the ssh -oKbdInteractiveDevices option, as demonstrated by a modified client that provides a different password for each pam element on this list.

CVSS Metrics

  • v3.1•HIGH•Score: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•openssh

    < 1:6.9p1-1 | < 1:6.9p1-1 | < 1:6.9p1-1 | < 1:6.9p1-1

References (1)