CVE-2016-6515
Summary
| CVE | CVE-2016-6515 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-08-07 21:59:09 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.0 7.5 HIGH from [email protected]
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-20 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
CompleteAV:N/AC:L/Au:N/C:N/I:N/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Fedoraproject | Fedora | 24 | All | All | All |
| Application | Openbsd | Openssh | All | p2 | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| oss-security - Announce: OpenSSH 7.3 released | af854a3a-2127-422b-91ae-364da2661108 | openwall.com | Third Party Advisory, VDB Entry |
| Document Display | HPE Support Center | af854a3a-2127-422b-91ae-364da2661108 | support.hpe.com | |
| security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc | af854a3a-2127-422b-91ae-364da2661108 | security.FreeBSD.org | |
| upstream commit · openssh/openssh-portable@fcd135c · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Issue Tracking, Patch |
| [SECURITY] [DLA 1500-1] openssh security update | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| [SECURITY] Fedora 24 Update: openssh-7.2p2-12.fc24 - package-announce - Fedora Mailing-Lists | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | |
| OpenSSH 7.2 Denial Of Service ≈ Packet Storm | af854a3a-2127-422b-91ae-364da2661108 | packetstormsecurity.com | |
| OpenSSH 7.2 - Denial of Service | af854a3a-2127-422b-91ae-364da2661108 | www.exploit-db.com | |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | |
| Oracle Critical Patch Update - October 2017 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | |
| cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf | af854a3a-2127-422b-91ae-364da2661108 | cert-portal.siemens.com | |
| CVE-2016-6515 OpenSSH Vulnerability in NetApp Products | NetApp Product Security | af854a3a-2127-422b-91ae-364da2661108 | security.netapp.com | |
| OpenSSH Bugs Let Remote Users Deny Service and Obtain Potentially Sensitive Timing Information and Let Local Users Gain Elevated Privileges - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| Malformed Request | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf | af854a3a-2127-422b-91ae-364da2661108 | cert-portal.siemens.com | |
| [SECURITY] Fedora 24 Update: openssh-7.2p2-12.fc24 - package-announce - Fedora Mailing-Lists | MITRE | lists.fedoraproject.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 591280 Siemens SCALANCE X-200RNA Switch Devices Denial of Service (DoS) Multiple Vulnerabilities (ICSA-22-349-21, SSA-412672)