Security Bulletin
Summary
There are vulnerabilities in OpenSSH to which the IBM® FlashSystem™ V840 is susceptible. An exploit of these vulnerabilities (CVE-2015-6563 and CVE-2015-6564) could allow a remote attacker to bypass security restrictions to gain elevated privileges or conduct an impersonation attack.
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)
Affected Products and Versions
Affected Products and Versions of FlashSystem V840’s two node types
Storage Node
· Machine Type Models (MTMs) affected include 9846-AE1 and 9848-AE1
· Code versions affected include supported VRMFs:
o 1.3.0.0 – 1.3.0.6
· Code streams NOT affected:
o 1.4 stream
Controller Node
· MTMs affected include 9846-AC0, 9848-AC0, 9846-AC1, and 9848-AC1
· Code streams NOT affected:
· 7.6, 7.7, and 7.8 code streams were NOT affected
Remediation/Fixes
|
V840 MTMs | VRMF | APAR | Remediation/First Fix |
| Storage nodes: 9846-AE1 & 9848-AE1 | Code fixes are now available, the minimum VRMF containing the fix depends on the code stream: Storage Node VRMF 1.3 stream: 1.3.0.7 | N/A | FlashSystem V840 fixes for storage and controller node are available @ IBM’s Fix Central |
Workarounds and Mitigations
None
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References
Acknowledgement
None
Change History
2 March 2017 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
17 June 2018
UID
ssg1S1010013