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CVE-2016-8858

Published: 09 December 2016

** DISPUTED ** The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."

Priority

Negligible

CVSS 3 base score: 7.5

Status

Package Release Status
openssh
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 16.04 ESM (Xenial Xerus) Ignored

Ubuntu 14.04 ESM (Trusty Tahr) Ignored

Patches:
Upstream: https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89ad

Notes

AuthorNote
mdeslaur
DoS is limited to attacker's connection only, and openssh
upstream does not consider this to be a security issue
We do not consider this to be a security issue either, marking
as ignored

References

Bugs