Security Bulletin
Summary
Multiple vulnerabilities have been identified in ntp that is embedded in the FSM. This bulletin addresses these vulnerabilities.
Vulnerability Details
CVEID: CVE-2017-6464
DESCRIPTION: NTP is vulnerable to a denial of service. A remote authenticated attacker could exploit this vulnerability using a malformed mode configuration directive to cause the application to crash.
CVSS Base Score: 4.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123610 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H)
CVEID: CVE-2017-6463
DESCRIPTION: NTP is vulnerable to a denial of service. By sending an invalid setting, a remote authenticated attacker could exploit this vulnerability using the :config directive to cause the daemon to crash.
CVSS Base Score: 4.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123612 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H)
CVEID: CVE-2017-6462
DESCRIPTION: NTP is vulnerable to a denial of service, caused by a buffer overflow in the legacy Datum Programmable Time Server refclock driver. By sending specially crafted packets, a local authenticated attacker could exploit this vulnerability to overflow a buffer and cause a denial of service.
CVSS Base Score: 1.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123611 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L)
CVEID: CVE-2017-6460
DESCRIPTION: NTP is vulnerable to a denial of service, caused by a stack-based buffer overflow in ntpq. By sending a specially crafted request, a remote authenticated attacker could overflow a buffer and cause the application to crash.
CVSS Base Score: 4.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123618 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H)
CVEID: CVE-2017-6458
DESCRIPTION: NTP is vulnerable to a denial of service, caused by multiple buffer overflows in the ctl_put() functions. By sending an overly long string argument, a remote authenticated attacker could exploit this vulnerability to overflow a buffer and cause the application to crash.
CVSS Base Score: 4.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123616 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H)
CVEID: CVE-2016-9042
DESCRIPTION: NTP is vulnerable to a denial of service, caused by an error in the origin timestamp check functionality. By sedning specially crafted packets, a remote authenticated attacker could exploit this vulnerability to cause the application to crash.
CVSS Base Score: 4.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123619 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
Flex System Manager 1.3.4.0
Flex System Manager 1.3.3.0
Flex System Manager 1.3.2.1
Flex System Manager 1.3.2.0
Remediation/Fixes
None
Workarounds and Mitigations
IBM recommends updating the FSM and all affected remote Common Agent Services (CAS) endpoints using the instructions referenced in this table.
| Product | VRMF | Remediation |
| Flex System Manager | 1.3.4.0 | Navigate to the Support Portal and search for technote 829047509 for instructions on installing updates for FSM version 1.3.4 and Agents. |
| Flex System Manager | 1.3.3.0 | Navigate to the Support Portal and search for technote 829047509 for instructions on installing updates for FSM version 1.3.3 and Agents. |
| Flex System Manager | 1.3.2.0 1.3.2.1 | Navigate to the Support Portal and search for technote 829047509 for instructions on installing updates for FSM version 1.3.2 and Agents. |
For all other VRMF IBM recommends upgrading to a fixed, supported version/release of the product.
Note: Installation of the fixes provided in the technote will install a cumulative fix package that will update the version of the FSM. Reference the technote for more details.
You should verify applying this fix does not cause any compatibility issues. The fix may disable older encrypted protocols by default.
IBM recommends that you review your entire environment to identify other areas where you have enabled weak encryption and take appropriate mitigation and remediation actions.
For a complete listing of FSM security iFixes go to this technote: http://www-01.ibm.com/support/docview.wss?uid=nas7797054ebc3d9857486258027006ce4a0&myns=purflex&mync=E&cm_sp=purflex-_-NULL-_-E
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References
Change History
29 September 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
isg3T1025805