CVE-2016-6515

7.5 HIGH

Published: August 07, 2016 Modified: May 06, 2026

Description

The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://openwall.com/lists/oss-security/2016/08/01/2

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html

Source: cve@mitre.org

http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html

Source: cve@mitre.org

http://www.securityfocus.com/bid/92212

Source: cve@mitre.org

http://www.securitytracker.com/id/1036487

Source: cve@mitre.org

https://access.redhat.com/errata/RHSA-2017:2029

Source: cve@mitre.org

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

Source: cve@mitre.org

https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf

Source: cve@mitre.org

https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97

Source: cve@mitre.org

Issue Tracking Patch

https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/

Source: cve@mitre.org

https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc

Source: cve@mitre.org

https://security.netapp.com/advisory/ntap-20171130-0003/

Source: cve@mitre.org

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us

Source: cve@mitre.org

https://www.exploit-db.com/exploits/40888/

Source: cve@mitre.org

http://openwall.com/lists/oss-security/2016/08/01/2