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Security Bulletin: Vulnerabilities in OpenSSH affect IBM Security Network Protection (CVE-2015-5352, CVE-2015-6563, and CVE-2015-6564)

Security Bulletin


Summary

Security vulnerabilities have been discovered in OpenSSH, which is used by IBM Security Network Protection.

Vulnerability Details

CVEID: CVE-2015-5352
DESCRIPTION:
OpenSSH could allow a remote authenticated attacker to bypass security restrictions, caused by an error when making connections after ForwardX11Timeout expired. If X11 connections are forwarded with ForwardX11Trusted=no, an attacker could exploit this vulnerability to bypass XSECURITY restrictions.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104418 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)

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)

Affected Products and Versions

IBM Security Network Protection 5.3.1
IBM Security Network Protection 5.3.2

Remediation/Fixes

Product

VRMFRemediation/First Fix
IBM Security Network ProtectionFirmware version 5.3.1Download Firmware 5.3.1.10 from IBM Security License Key and Download Center and upload and install via the Available Updates page of the Local Management Interface.
IBM Security Network ProtectionFirmware version 5.3.2Install Firmware 5.3.2.4 from IBM Security License Key and Download Center and upload and install via the Available Updates page of the Local Management Interface.
IBM Security Network ProtectionFirmware version 5.3.3Install Firmware 5.3.3.1 from the Available Updates page of the Local Management Interface, or by performing a One Time Scheduled Installation from SiteProtector.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

22 August 2016: Original Version Published

*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.

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Document Information

Modified date:
16 June 2018

UID

swg21987978