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Security Bulletin: Vulnerabilities in Kerberos (krb5) affect IBM Security Network Protection (CVE-2015-8629, and CVE-2015-8631)

Security Bulletin


Summary

IBM Security Network Protection uses Kerberos (krb5) to provide network authentication. The Kerberos (krb5) version that is shipped with IBM Security Network Protection contains multiple security vulnerabilities.

Vulnerability Details

CVEID: CVE-2015-8629
DESCRIPTION:
MIT Kerberos could allow a remote authenticated attacker to obtain sensitive information, caused by a null termination in the xdr_nullstring() function. By sending specially-crafted data, an attacker could exploit this vulnerability to obtain sensitive information from the memory.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/110395 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2015-8631
DESCRIPTION:
MIT Kerberos is vulnerable to a denial of service, caused by the leak of the client and server name by the rb5_unparse_name() function. By sending specially-crafted data, a remote authenticated attacker could exploit this vulnerability to consume all available memory resources.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/110393 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:N/A:L)

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 5.3.1.9 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 5.3.2.3 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

30 May 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

swg21980157