CVE-2016-10009

Impact:
Moderate
Public Date:
2016-12-19
IAVA:
2017-A-0081
Bugzilla:
1406269: CVE-2016-10009 openssh: loading of untrusted PKCS#11 modules in ssh-agent
It was found that ssh-agent could load PKCS#11 modules from arbitrary paths. An attacker having control of the forwarded agent-socket on the server, and the ability to write to the filesystem of the client host, could use this flaw to execute arbitrary code with the privileges of the user running ssh-agent.

Find out more about CVE-2016-10009 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

In order to exploit this flaw, the attacker needs to have control of the forwarded agent-socket and the ability to write to the filesystem of the host running ssh-agent. Because of this restriction for successful exploitation, this issue has been rated as having Moderate security impact. A future update may address this flaw.

CVSS v2 metrics

Base Score 4.6
Base Metrics AV:N/AC:H/Au:S/C:P/I:P/A:P
Access Vector Network
Access Complexity High
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial

CVSS v3 metrics

CVSS3 Base Score 6.6
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Impact High
Availability Impact High

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (openssh) RHSA-2017:2029 2017-08-01

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 openssh Will not fix
Red Hat Enterprise Linux 5 openssh Will not fix
Red Hat Enterprise Linux 4 openssh Will not fix

External References

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