CVE-2016-6515

CVSS V2 High 7.8 CVSS V3 High 7.5
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.
Overview
  • CVE ID
  • CVE-2016-6515
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2016-08-07T21:59:09
  • Last Modified Date
  • 2022-12-13T12:15:23
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:openbsd:openssh:*:p2:*:*:*:*:*:* 1 OR 7.2
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.8
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
http://openwall.com/lists/oss-security/2016/08/01/2 Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.securityfocus.com/bid/92212
http://www.securitytracker.com/id/1036487
https://access.redhat.com/errata/RHSA-2017:2029
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf
https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97 Issue Tracking Patch
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/ Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc
https://security.netapp.com/advisory/ntap-20171130-0003/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us
https://www.exploit-db.com/exploits/40888/
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2016-6515
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6515
History
Created Old Value New Value Data Type Notes
2022-05-10 16:05:39 Added to TrackCVE
2022-12-02 10:50:28 2016-08-07T21:59Z 2016-08-07T21:59:09 CVE Published Date updated
2022-12-02 10:50:28 2021-09-14T13:15:09 CVE Modified Date updated
2022-12-02 10:50:28 Modified Vulnerability Status updated
2022-12-13 13:08:29 2022-12-13T12:15:23 CVE Modified Date updated
2022-12-13 13:08:31 References updated
2023-01-19 16:05:44 Modified Undergoing Analysis Vulnerability Status updated
2023-01-20 09:05:45 Undergoing Analysis Modified Vulnerability Status updated