Improper input validation in Openbsd Openssh
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, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.771 (99.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Openbsd Openssh
- Fedoraproject Fedora — versions 24
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org (Patch, Issue Tracking)
- cve@mitre.org
- 40888 (exploit)
- 92212 (vdb-entry)
- FreeBSD-SA-17:06 (vendor-advisory)
- cve@mitre.org
- 1036487 (vdb-entry)
- FEDORA-2016-4a3debc3a6 (vendor-advisory)
Frequently asked questions
- What is CVE-2016-6515?
- CVE-2016-6515 is a high-severity vulnerability in Openbsd Openssh, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-08-07.
- How severe is CVE-2016-6515?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-6515 known to be exploited?
- 32 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.