CVE-2016-6210 | BDVDB-2026-81552 Detail
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: network.
Weaknesses#
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References#
- https://access.redhat.com/errata/RHSA-2017:2563
- http://www.securitytracker.com/id/1036319
- http://seclists.org/fulldisclosure/2016/Jul/51
- http://www.debian.org/security/2016/dsa-3626
- https://www.exploit-db.com/exploits/40136/
- https://www.exploit-db.com/exploits/40113/
- https://www.openssh.com/txt/release-7.3
- https://security.gentoo.org/glsa/201612-18
- https://access.redhat.com/errata/RHSA-2017:2029
- http://www.securityfocus.com/bid/91812
- https://security.netapp.com/advisory/ntap-20190206-0001/
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Exploit#
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.