Improper Input Validation The advisory has been revoked - it doesn't affect any version of package openssh (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UBUNTU1704-OPENSSH-620165
- published7 Aug 2016
- disclosed7 Aug 2016
Introduced: 7 Aug 2016
CVE-2016-6515 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:17.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-6515
- https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6515
- https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
- https://security-tracker.debian.org/tracker/CVE-2016-6515
- https://www.exploit-db.com/exploits/40888/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/
- https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc
- https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97
- http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html
- https://security.netapp.com/advisory/ntap-20171130-0003/
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://openwall.com/lists/oss-security/2016/08/01/2
- https://access.redhat.com/errata/RHSA-2017:2029
- http://www.securityfocus.com/bid/92212
- http://www.securitytracker.com/id/1036487
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/
- https://www.exploit-db.com/exploits/40888
- https://github.com/opsxcq/exploit-CVE-2016-6515