Security Bulletin: Vulnerabilities in Kerberos (krb5) affect IBM Security Network Protection (CVE-2014-5352, CVE-2014-5353, CVE-2014-5355, CVE-2014-9421, and CVE-2014-9422)

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

CVE-ID: CVE-2014-5352 Description: MIT krb5 could allow a remote authenticated attacker to execute arbitrary code on the system, caused by a double-free error in gss_process_context_token(). An attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.0
CVSS Temporal Score: <https://exchange.xforce.ibmcloud.com/#/vulnerabilities/100842&gt; for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:C/I:C/A:C)

CVE-ID: CVE-2014-5353 Description: MIT krb5 is vulnerable to a denial of service, caused by a NULL pointer dereference when kadmind is configured to use LDAP for the KDC database. A remote authenticated attacker could exploit this vulnerability to cause kadmind to crash.
CVSS Base Score: 3.5
CVSS Temporal Score: <https://exchange.xforce.ibmcloud.com/#/vulnerabilities/99346&gt; for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:S/C:N/I:N/A:P)

CVE-ID: CVE-2014-5355 Description: MIT Kerberos is vulnerable to a denial of service, caused by a NULL pointer dereference in the krb5_recvauth function. By sending a non-null-terminated version string, a remote attacker could exploit this vulnerability to cause the service to crash.
CVSS Base Score: 5.0
CVSS Temporal Score: <https://exchange.xforce.ibmcloud.com/#/vulnerabilities/100972&gt; for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P

CVE-ID: CVE-2014-9421**
Description:** MIT krb5 could allow a remote authenticated attacker to execute arbitrary code on the system, caused by a double-free error in the kadmind daemon. An attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.0
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/100841 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:C/I:C/A:C)
**
CVE-ID:** CVE-2014-9422**
Description: *MIT krb5 could allow a remote authenticated attacker to bypass security restrictions, caused by the acceptance of authentications to two-component server principals. An attacker could exploit this vulnerability to impersonate arbitrary users.
CVSS Base Score: 6.1
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/100840 for more information
CVSS Environmental Score: Undefined
CVSS Vector: (AV:N/AC:H/Au:S/C:P/I:P/A:C)

Affected Products and Versions

IBM Security Network Protection 5.2
IBM Security Network Protection 5.3

Remediation/Fixes

Product

| VRMF| Remediation/First Fix
—|—|—
IBM Security Network Protection | Firmware version 5.2| Download 5.2.0.0-ISS-XGS-All-Models-Hotfix-FP0010 from IBM Fix Central and upload and install via the Available Updates page of the local management interface.
IBM Security Network Protection| Firmware version 5.3| Install Fixpack 5.3.1.2 from the Available Updates page of the local management interface, or by performing a One Time Scheduled Installation from SiteProtector.

Workarounds and Mitigations

None