Rapid7 Vulnerability & Exploit Database

Alpine Linux: CVE-2016-6210: openssh User enumeration via covert timing channel

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Alpine Linux: CVE-2016-6210: openssh User enumeration via covert timing channel

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
02/13/2017
Created
07/25/2018
Added
08/30/2017
Modified
01/29/2019

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.

Solution(s)

  • alpine-linux-upgrade-apache2
  • alpine-linux-upgrade-openssh

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