Security Bulletin: Vulnerabilities in NTP affect IBM Security Network Protection (CVE-2015-1798, CVE-2015-1799, and CVE-2015-3405)

Summary

Security vulnerabilities have been discovered in NTP used with IBM Security Network Protection.

Vulnerability Details

CVEID: CVE-2015-1798**
DESCRIPTION:** Network Time Protocol (NTP) Project NTP daemon (ntpd) could allow a remote attacker to bypass security restrictions, caused by the acceptance of packets that do not contain a message authentication code (MAC) as valid packets wen configured for symmetric key authentication. An attacker could exploit this vulnerability using man-in-the-middle techniques to bypass the authentication process.
CVSS Base Score: 5.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/102051 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:A/AC:M/Au:N/C:P/I:P/A:P)

CVEID: CVE-2015-1799**
DESCRIPTION:** Network Time Protocol (NTP) Project NTP daemon (ntpd) is vulnerable to a denial of service, caused by an error when using symmetric key authentication. By sending specially-crafted packets to both peering hosts, an attacker could exploit this vulnerability to prevent synchronization.
CVSS Base Score: 5.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/102052 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:A/AC:M/Au:N/C:P/I:P/A:P)

CVEID: CVE-2015-3405**
DESCRIPTION:** Network Time Protocol (NTP) could allow a remote attacker to conduct spoofing attacks, caused by the generation of MD5 symmetric keys on big-endian systems by the ntp-keygen utility. An attacker could exploit this vulnerability using the generated MD5 keys to spoof an NTP client or server.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104387 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)

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-FP0012 from IBM Fix Central and upload and install via the Fix Packs page of the Local Management Interface.
IBM Security Network Protection| Firmware version 5.3| Install Firmware 5.3.1.5 from the Available Updates page of the Local Management Interface, or by performing a One Time Scheduled Installation from SiteProtector.

Workarounds and Mitigations

None