CVE-2016-6210
openssh - security update
5.9
MEDIUM
CVSS 3.1
EPSS 90.0%
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.
How to fix CVE-2016-6210
To remediate CVE-2016-6210, upgrade the affected package to a fixed version below.
- —upgrade to 6.8_p1-r7 or later
- —upgrade to 1:7.2p2-6 or later
- —upgrade to 1:6.0p1-4+deb7u5 or later
- —upgrade to 1:6.7p1-5+deb8u3 or later
Is CVE-2016-6210 being exploited?
Likely — EPSS is 90.0%, placing CVE-2016-6210 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (4)
- from 0, < 6.8_p1-r7
- from 0, < 1:7.2p2-6
- from 0, < 1:6.0p1-4+deb7u5
- from 0, < 1:6.7p1-5+deb8u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |