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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
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 ↗