CVE-2016-6210

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.

Published date
2017-02-13T17:59Z
Last modification date
2022-12-13T12:15Z
Assigner
cve@mitre.org
Problem type
CWE-200

Impact

CVSS v3 vector string
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NameURLSourceTags
https://www.openssh.com/txt/release-7.3https://www.openssh.com/txt/release-7.3CONFIRMRelease Notes, Vendor Advisory
20160714 opensshd - user enumerationhttp://seclists.org/fulldisclosure/2016/Jul/51FULLDISCMailing List, Third Party Advisory
91812http://www.securityfocus.com/bid/91812BIDVDB Entry, Third Party Advisory
GLSA-201612-18https://security.gentoo.org/glsa/201612-18GENTOO
1036319http://www.securitytracker.com/id/1036319SECTRACK
40136https://www.exploit-db.com/exploits/40136/EXPLOIT-DB
40113https://www.exploit-db.com/exploits/40113/EXPLOIT-DB
DSA-3626http://www.debian.org/security/2016/dsa-3626DEBIAN
RHSA-2017:2563https://access.redhat.com/errata/RHSA-2017:2563REDHAT
RHSA-2017:2029https://access.redhat.com/errata/RHSA-2017:2029REDHAT
https://security.netapp.com/advisory/ntap-20190206-0001/https://security.netapp.com/advisory/ntap-20190206-0001/CONFIRM
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfhttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfCONFIRM