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CVE-2019-16905

Published: 9 October 2019

OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.

Priority

Medium

CVSS 3 base score: 7.8

Status

Package Release Status
openssh
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
disco Not vulnerable
(code not built)
precise Not vulnerable
(code not present)
trusty Not vulnerable
(code not present)
upstream Needs triage

xenial Not vulnerable
(code not present)
openssh-ssh1
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
disco Not vulnerable
(code not present)
precise Does not exist

trusty Does not exist

upstream Ignored
(frozen on openssh 7.5p)
xenial Does not exist