All vulnerabilities

Servers and applications

CVE-2015-5600

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…

Severity
High 8.1
Published
3 Aug 2015
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSHServers and applications · cpe:a:openbsd:openssh
  • Every version up to 6.9

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-5600
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-5600