Security Bulletin: IBM Virtualization Engine TS7700 - The NTP monlist command is enabled (CVE-2013-5211)

Summary

The NTP daemon on the TS7700 has the ‘monlist’ command enabled. This command returns a list of recent hosts that have connected to the service…

Vulnerability Details

CVEID: CVE-2013-5211

DESCRIPTION:
NTP is vulnerable to a denial of service, caused by an error in the monlist feature in ntp_request.c. By sending a sending specially-crafted REQ_MON_GETLIST or REQ_MON_GETLIST_1 request, an attacker could exploit this vulnerability to consume available CPU resources and cause the server to crash.

CVSS Base Score: 5.0
CVSS Temporal Score: See <http://xforce.iss.net/xforce/xfdb/90143&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Affected Products and Versions

All versions of microcode for the IBM Virtualization Engine TS7700 (3957-V06, 3957-V07, 3957-VEA, 3957-VEB) prior to release R2.1 are affected. In addition, microcode versions of releases R2.1, R3.0, R3.1 and R3.2 prior to and including the following are also affected:

Release

| Version
—|—
R3.2| 8.32.0.84
R3.1| 8.31.1.4
R3.0| 8.30.2.23
R2.1| 8.21.0.178

Remediation/Fixes

Contact IBM Service at 1-800-IBM-SERV to arrange an upgrade to the latest microcode level followed by the installation of vtd_exec.209.

Release

| Fix
—|—
R3.2| 8.32.0.84 + vtd_exec.209
R3.1| 8.31.0.92 + vtd_exec.209
R3.0| 8.30.2.23 + vtd_exec.209
R2.1| 8.21.0.178 + vtd_exec.209
Older Releases| 8.21.0.178 + vtd_exec.209

Workarounds and Mitigations

Although IBM recommends that you upgrade to the fixes identified above, you can mitigate, but not eliminate the risk of these vulnerabilities by restricting physical and network access to the TS7700 to authorized users and IBM Service Personnel only.