CVE-2016-6210

medium

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.

References

https://access.redhat.com/errata/RHSA-2017:2029

https://access.redhat.com/errata/RHSA-2017:2563

https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

http://seclists.org/fulldisclosure/2016/Jul/51

https://security.gentoo.org/glsa/201612-18

https://security.netapp.com/advisory/ntap-20190206-0001/

https://www.exploit-db.com/exploits/40113/

https://www.exploit-db.com/exploits/40136/

http://www.debian.org/security/2016/dsa-3626

http://www.securitytracker.com/id/1036319

Details

Source: Mitre, NVD

Published: 2017-02-13

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: Medium