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Information Exposure Affecting pam_ssh_agent_auth package, versions <0:0.10.3-1.11.68.amzn1

Severity

 Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
6.88% (94th percentile)

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  • Snyk IDSNYK-AMZN201803-PAMSSHAGENTAUTH-1707951
  • published27 Sept 2021
  • disclosed13 Feb 2017
Report a new vulnerability Found a mistake?

Introduced: 13 Feb 2017

CVE-2016-6210  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 pam_ssh_agent_auth to version 0:0.10.3-1.11.68.amzn1 or higher.
This issue was patched in ALAS-2017-898.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pam_ssh_agent_auth package and not the pam_ssh_agent_auth package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

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.