Security Bulletin: Openssh vulnerabilities affect IBM SmartClound Entry (CVE-2015-5352 CVE-2015-6563 CVE-2015-6564)

Summary

IBM SmartCloud Entry is vulnerable to multiple OpenSSH vulnerabilities. An attacker could exploit these vulnerabilities to bypass XSECURITY restrictions, conduct impersonation attacks, or gain elevated privileges on the system.

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 SmartCloud Entry 2.2.0 through 2.2.0.4 Appliance fix pack 6
IBM SmartCloud Entry 2.3.0 through 2.3.0.4 Appliance fix pack 6
IBM SmartCloud Entry 2.4.0 through 2.4.0.4 Appliance fix pack 6
IBM SmartCloud Entry 3.1.0 through 3.1.0.4 Appliance fix pack 21
IBM SmartCloud Entry 3.2.0 through 3.2.0.4 Appliance fix pack 21

Remediation/Fixes

Product

| VRMF| APAR| Remediation/First Fix
—|—|—|—
IBM SmartCloud Entry| 2.2| None| IBM SmartCloud Entry 2.2.0 Appliance fix pack 7:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FOther+software%2FIBM+Starter+Kit+for+Cloud&fixids=2.2.0.4-IBM-SKC_APPL-FP007&source=SAR
IBM SmartCloud Entry| 2.3| None| IBM SmartCloud Entry 2.3.0 Appliance fix pack 7:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FOther+software%2FIBM+SmartCloud+Entry&fixids=2.3.0.4-IBM-SCE_APPL-FP007&source=SAR
IBM SmartCloud Entry| 2.4| None| IBM SmartCloud Entry 2.4.0 Appliance fix pack 7:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FOther+software%2FIBM+SmartCloud+Entry&fixids=2.4.0.4-IBM-SCE_APPL-FP007&source=SAR
IBM SmartCloud Entry| 3.1| None| IBM SmartCloud Entry 3.1.0 Appliance fix pack 22:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FOther+software%2FIBM+SmartCloud+Entry&fixids=3.1.0.4-IBM-SCE_APPL-FP22&source=SAR
IBM SmartCloud Entry| 3.2| None| IBM SmartCloud Entry 3.2.0 Appliance fix pack 22:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FOther+software%2FIBM+SmartCloud+Entry&fixids=3.2.0.4-IBM-SCE_APPL-FP22&source=SAR

Workarounds and Mitigations

None