-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Note: the current version of the following document is available here: https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_n a-c04974114 SUPPORT COMMUNICATION - SECURITY BULLETIN Document ID: c04974114 Version: 1 HPSBUX03437 SSRT110025 rev.1 - HP-UX IPFilter, Remote Denial of Service (DoS) NOTICE: The information in this Security Bulletin should be acted upon as soon as possible. Release Date: 2016-02-16 Last Updated: 2016-02-16 Potential Security Impact: Remote Denial of Service (DoS) Source: Hewlett Packard Enterprise, Product Security Response Team VULNERABILITY SUMMARY A potential security vulnerability has been identified with HP-UX running HP-UX IPFilter. The vulnerability could be remotely exploited to cause a denial of service (DoS). Note: The vulnerability only exists when HP-UX IPFilter rules are configured for UDP protocol packets and the keep state option is used in that IPFilter rule. References: PSRT110025 CVE-2016-1987 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. HP-UX IPFilter A.11.31.18.21 BACKGROUND CVSS 2.0 Base Metrics =========================================================== Reference Base Vector Base Score CVE-2016-1987 (AV:A/AC:H/Au:N/C:N/I:N/A:P) 1.8 =========================================================== Information on CVSS is documented in HP Customer Notice: HPSN-2008-002 RESOLUTION HPE has made the following mitigation information available to resolve the vulnerability for version A.11.31.18.21 of HP-UX IPFilter. This vulnerability can be mitigated by either of the following actions: A. Remove the keep state option from udp rules Search for rules with proto udp and keep state to identify the impacted rule and remove the keep state option. Example rules are as follows: pass in quick on lanN proto udp from to keep state pass out quick on lanN proto udp from to keep state For the above example rules, remove the keep state from the rule as follows: pass in quick on lanN proto udp from to pass out quick on lanN proto udp from to B. Alternatively, HP-UX IPFilter can be downgraded to version A.11.31.18.10 HISTORY Version:1 (rev.1) - 16 February 2016 Initial release Third Party Security Patches: Third party security patches that are to be installed on systems running Hewlett Packard Enterprise (HPE) software products should be applied in accordance with the customer's patch management policy. Support: For issues about implementing the recommendations of this Security Bulletin, contact normal HPE Services support channel. For other issues about the content of this Security Bulletin, send e-mail to security-alert@hpe.com. Report: To report a potential security vulnerability with any HPE supported product, send Email to: security-alert@hpe.com Subscribe: To initiate a subscription to receive future HPE Security Bulletin alerts via Email: http://www.hpe.com/support/Subscriber_Choice Security Bulletin Archive: A list of recently released Security Bulletins is available here: http://www.hpe.com/support/Security_Bulletin_Archive Software Product Category: The Software Product Category is represented in the title by the two characters following HPSB. 3C = 3COM 3P = 3rd Party Software GN = HPE General Software HF = HPE Hardware and Firmware MU = Multi-Platform Software NS = NonStop Servers OV = OpenVMS PV = ProCurve ST = Storage Software UX = HP-UX Copyright 2016 Hewlett Packard Enterprise Hewlett Packard Enterprise shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental,special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett Packard Enterprise and the names of Hewlett Packard Enterprise products referenced herein are trademarks of Hewlett Packard Enterprise in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJWw6zbAAoJEGIGBBYqRO9/zakIAL3jZPZgP7Ih3A6FGYRjj4By G5QIsFJA00RVdl8FddCyzjauBX2AH/NEys50jfSy3TjETOJyrpQYcXY08hX+GNtB UYhi0xUw5KXsupIVsjpB22aKtxFh2N+Z3F8/rnrSDf2NCGHlInlRza588B+TKIfr YAj7gUV/569msAHtdM9dJkMQ4+GBhMWWxm6UbOn030GzHXvYpcNNkqXbiQubHo+0 NEtkciQV2DwEBpL6XyaO/CtCpo2GSb9D3BVwvjVwRWX6SVExyrPRoOjtkFCdiuQx Y4AEYdvUuQYD5Jm6Epb+79UYxSQwrVgq+7Y6AR1TL6VdrM+K1+aoWs1EqH052uc= =5+NB -----END PGP SIGNATURE-----