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
Status
| Package | Release | Status |
|---|---|---|
|
openssh Launchpad, Ubuntu, Debian |
precise |
Released
(1:5.9p1-5ubuntu1.10)
|
| trusty |
Released
(1:6.6p1-2ubuntu2.8)
|
|
| upstream |
Released
(1:7.2p2-6)
|
|
| wily |
Ignored
(end of life)
|
|
| xenial |
Released
(1:7.2p2-4ubuntu2.1)
|
|
| yakkety |
Not vulnerable
(1:7.3p1-1)
|
|
| zesty |
Not vulnerable
(1:7.3p1-1)
|
|
|
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 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |