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Security Bulletin: Vulnerabilities in OpenSSH affect Power Hardware Management Console

Security Bulletin


Summary

OpenSSH is used by Power Hardware Management Console (HMC). HMC has addressed the applicable CVEs

Vulnerability Details

CVEID: CVE-2015-6563
DESCRIPTION:
OpenSSH could allow a local attacker to bypass security restrictions, caused by the acceptance of extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests by the monitor component in sshd. An attacker could exploit this vulnerability to conduct impersonation attacks.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/105881 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID: CVE-2015-6564
DESCRIPTION:
OpenSSH could allow a local attacker to gain elevated privileges on the system, caused by a use-after-free error in the mm_answer_pam_free_ctx function. An attacker could exploit this vulnerability to gain elevated privileges on the system.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/105882 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)


CVEID: CVE-2016-3115
DESCRIPTION:
OpenSSH could allow a remote authenticated attacker to execute arbitrary commands on the system, caused by improper validation of user-supplied X11 authentication credentials by the sshd server. By sending specially crafted X11 credential data, an attacker could exploit this vulnerability to inject xauth commands and execute arbitrary commands on the system with the privileges of the victim.
CVSS Base Score: 8.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111431 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2016-1908
DESCRIPTION:
OpenSSH could allow a remote authenticated attacker to bypass security restrictions, caused by the improper handling of errors when generating authentication cookies for untrusted X11 forwarding. An attacker could exploit this vulnerability to gain access to the target local X server.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/110030 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

Power HMC V7.7.9.0
Power HMC V8.8.1.0
Power HMC V8.8.2.0
Power HMC V8.8.3.0
Power HMC V8.8.4.0
Power HMC V8.8.5.0

Remediation/Fixes

The following fixes are available on IBM Fix Central at: http://www-933.ibm.com/support/fixcentral/

Product
VRMF
APAR
Remediation/Fix
Power HMC
V7.7.9.0 SP3
MB04029
Power HMC
V8.8.1.0 SP3
MB04030
Power HMC
V8.8.2.0 SP2
MB04031
Power HMC
V8.8.3.0 SP2
MB04032
Power HMC
V8.8.4.0 SP1
MB04033
Power HMC
V8.8.5.0
MB04035

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References

Off

Change History

24 August 2016: Original version published.
7 September 2016: Update CVSS reference to V3.
29 September 2016: Changed HMC version/release naming to VRMF format.

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

[{"Product":{"code":"SGW5F2","label":"HMC Firmware"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Component":"HMC","Platform":[{"code":"PF016","label":"Linux"}],"Version":"Version Independent","Edition":"Enterprise","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
17 June 2018

UID

nas8N1021524