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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2819 K02138183: BIND vulnerability CVE-2016-9147 3 November 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 Products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-9147 Reference: ESB-2017.2080 ESB-2017.1626 ESB-2017.0964 ESB-2017.0710 ESB-2017.0126 Original Bulletin: https://support.f5.com/csp/article/K02138183 - --------------------------BEGIN INCLUDED TEXT-------------------- Final - K02138183: BIND vulnerability CVE-2016-9147 Security Advisory Original Publication Date: Jan 13, 2017 Updated Date: Nov 02, 2017 Applies to (see versions): o Product: BIG-IQ, BIG-IQ Cloud, BIG-IQ Device, BIG-IQ Security, BIG-IQ ADC, BIG-IQ Centralized Management 5.1.0, 5.0.0, 4.6.0, 4.5.0, 4.4.0, 4.3.0, 4.2.0, 4.1.0, 4.0.0 o Product: BIG-IP, BIG-IP AAM, BIG-IP AFM, BIG-IP Analytics, BIG-IP APM, BIG-IP ASM, BIG-IP DNS, BIG-IP Edge Gateway, BIG-IP GTM, BIG-IP Link Controller, BIG-IP LTM, BIG-IP PEM, BIG-IP PSM, BIG-IP WebAccelerator 13.0.0, 12.1.2, 12.1.1, 12.1.0, 12.0.0, 11.6.1, 11.6.0, 11.5.4, 11.5.3, 11.5.2, 11.5.1, 11.5.0, 11.4.1, 11.4.0, 11.2.1 o Product: Enterprise Manager 3.1.1 o Product: F5 iWorkflow 2.0.2, 2.0.1, 2.0.0 o Product: LineRate 2.6.1, 2.6.0, 2.5.2, 2.5.1, 2.5.0 o Product: ARX, ARX 6.4.0, 6.3.0, 6.2.0 o Product: F5 WebSafe 1.0.0 o Product: Traffix SDC 5.1.0, 4.4.0, 4.0.5, 4.0.2, 4.0.0 o Product: BIG-IQ Cloud and Orchestration 1.0.0 The security issue described in this article has been resolved or does not affect any F5 products. There will be no further updates, unless new information is discovered. Security Advisory Description named in ISC BIND 9.9.9-P4, 9.9.9-S6, 9.10.4-P4, and 9.11.0-P1 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a response containing an inconsistency among the DNSSEC-related RRsets. ( CVE-2016-9147) Impact When the BIND recursion option is enabled, an attacker can exploit this vulnerability to cause the named process to restart. Additionally, the restarted process does not trigger the BIG-IP system high availability (HA) failover event. By default, the BIND recursion option is not enabled on BIG-IP DNS systems. If the BIND recursion option is enabled, BIG-IP DNS systems are vulnerable. Security Advisory Status F5 Product Development has assigned ID 636700 (BIG-IP) to this vulnerability. To determine if your release is known to be vulnerable, the components or features that are affected by the vulnerability, and for information about releases or hotfixes that address the vulnerability, refer to the following table: +---------------+----------------+-----------------+----------+----------------+ | |Versions known |Versions known to| |Vulnerable | |Product |to be vulnerable|be not vulnerable|Severity |component or | | | | | |feature | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP LTM |13.0.0 |12.0.0 - 12.1.2 |High |BIND | | | |11.4.0 - 11.6.1 | | | | | |11.2.1 | | | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP AAM |13.0.0 |12.0.0 - 12.1.2 |High |BIND | | | |11.4.0 - 11.6.1 | | | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP AFM |13.0.0 |12.0.0 - 12.1.2 |High |BIND | | | |11.4.0 - 11.6.1 | | | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP |13.0.0 |12.0.0 - 12.1.2 |High |BIND | |Analytics | |11.4.0 - 11.6.1 | | | | | |11.2.1 | | | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP APM |13.0.0 |12.0.0 - 12.1.2 |High |BIND | | | |11.4.0 - 11.6.1 | | | | | |11.2.1 | | | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP ASM |13.0.0 |12.0.0 - 12.1.2 |High |BIND | | | |11.4.0 - 11.6.1 | | | | | |11.2.1 | | | +---------------+----------------+-----------------+----------+----------------+ |BIG-IP DNS |13.0.0 |13.0.0 HF1 |High |BIND | | | |12.0.0 - 12.1.2 | | | +---------------+----------------+-----------------+----------+----------------+ |BIG-IP Edge |None |11.2.1 |Not |None | |Gateway | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |BIG-IP GTM |None |11.4.0 - 11.6.1 |Not |None | | | |11.2.1 |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP Link |13.0.0 |12.0.0 - 12.1.2 |High |BIND | |Controller | |11.4.0 - 11.6.1 | | | | | |11.2.1 | | | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP PEM |13.0.0 |12.0.0 - 12.1.2 |High |BIND | | | |11.4.0 - 11.6.1 | | | +---------------+----------------+-----------------+----------+----------------+ |BIG-IP PSM |None |11.4.0 - 11.4.1 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |BIG-IP |None |11.2.1 |Not |None | |WebAccelerator | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ | | |13.0.0 HF1 | | | |BIG-IP WebSafe |13.0.0 |12.0.0 - 12.1.2 |High |BIND | | | |11.6.0 - 11.6.1 | | | +---------------+----------------+-----------------+----------+----------------+ |ARX |None |6.2.0 - 6.4.0 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |Enterprise |None |3.1.1 |Not |None | |Manager | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |BIG-IQ Cloud |None |4.0.0 - 4.5.0 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |BIG-IQ Device |None |4.2.0 - 4.5.0 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |BIG-IQ Security|None |4.0.0 - 4.5.0 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |BIG-IQ ADC |None |4.5.0 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |BIG-IQ | |5.0.0 - 5.1.0 |Not | | |Centralized |None |4.6.0 |vulnerable|None | |Management | | | | | +---------------+----------------+-----------------+----------+----------------+ |BIG-IQ Cloud | | |Not | | |and |None |1.0.0 |vulnerable|None | |Orchestration | | | | | +---------------+----------------+-----------------+----------+----------------+ |F5 iWorkflow |None |2.0.0 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |LineRate |None |2.5.0 - 2.6.1 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ |Traffix SDC |None |4.0.0 - 5.1.0 |Not |None | | | | |vulnerable| | +---------------+----------------+-----------------+----------+----------------+ Security Advisory Recommended Actions If you are running a version listed in the Versions known to be vulnerable column, you can eliminate this vulnerability by upgrading to a version listed in the Versions known to be not vulnerable column. If the table lists only an older version than what you are currently running, or does not list a non-vulnerable version, then no upgrade candidate currently exists. Mitigation To mitigate this vulnerability, you can disable the recursion option in the BIND configuration (if it is not required for your environment). To do so, perform the following procedure. Impact of procedure: This procedure disables the recursion feature in the BIND configuration and restarts the system service; this interruption may affect the BIG-IP system responding to DNS queries. F5 recommends that you perform this procedure during a scheduled maintenance period. 1. Log in to the Advanced Shell (bash) of the BIG-IP system as the root user. 2. To verify that the system has recursion enabled for the named service, type the following command: grep "recursion\ " /var/named/config/named.conf If the output displays "recursion yes," proceed to step 4. 3. To verify that the system has recursion enabled for the dnscached service, type the following command: grep "recursion\ " /var/dnscached/config/named.conf If the output displays "recursion yes," proceed to step 4. Note: The /var/dnscached/config/named.conf configuration file is valid only if the BIG-IP system is provisioned, or was previously provisioned, with the BIG-IP APM module. 4. Use an editor of your choice to remove the following lines from the target configuration file: recursion yes; allow-recursion { <IP-Addresses-ACL> }; 5. Optional: If you have more than one file to edit, after evaluating the files in step 2 and step 3, repeat step 4 for the next configuration file. 6. Optional: If you have modified the configuration of the dnscached service in step 4, you must restart the dnscached service by typing the following command: tmsh restart /sys service dnscached 7. Optional: If you have modified the configuration of the named service in step 4, you must restart the named service by typing the following command: tmsh restart /sys service named Supplemental Information o K9970: Subscribing to email notifications regarding F5 products o K9957: Creating a custom RSS feed to view new and updated documents o K4602: Overview of the F5 security vulnerability response policy o K4918: Overview of the F5 critical issue hotfix policy o K167: Downloading software and firmware from F5 o K13123: Managing BIG-IP product hotfixes (11.x - 13.x) o K9502: BIG-IP hotfix matrix - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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