CVE-2016-6210

Published: 18 July 2016

sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.

Priority

Low

CVSS 3 base score: 5.9

Status

Package Release Status
openssh
Launchpad, Ubuntu, Debian
Upstream
Released (1:7.2p2-6)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1:7.2p2-4ubuntu2.1)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (1:6.6p1-2ubuntu2.8)
Patches:
Upstream: https://anongit.mindrot.org/openssh.git/commit/?id=9286875a73b2de7736b5e50692739d314cd8d9dc
Upstream: https://anongit.mindrot.org/openssh.git/commit/?id=283b97ff33ea2c641161950849931bd578de6946
Upstream: https://anongit.mindrot.org/openssh.git/commit/?id=dbf788b4d9d9490a5fff08a7b09888272bb10fcc