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CVE-2016-6515
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication,…
High7.5EPSS 58.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 58.6% · top 0.9% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (15)
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20171130-0003/ (opens in a new tab)x_transferred
- https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97 (opens in a new tab)x_transferred
- http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html (opens in a new tab)x_transferred
- 40888 (opens in a new tab)exploitx_transferred
- 92212 (opens in a new tab)vdb-entryx_transferred
- FreeBSD-SA-17:06 (opens in a new tab)vendor-advisoryx_transferred
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html (opens in a new tab)x_transferred
- 1036487 (opens in a new tab)vdb-entryx_transferred
- FEDORA-2016-4a3debc3a6 (opens in a new tab)vendor-advisoryx_transferred
- RHSA-2017:2029 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update (opens in a new tab)mailing-listx_transferred
- [oss-security] 20160801 Announce: OpenSSH 7.3 released (opens in a new tab)mailing-listx_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf (opens in a new tab)x_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .