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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3052 iRulesLX debug NodeJS vulnerability CVE-2019-6644 12 August 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 BIG-IP products Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-6644 CVE-2018-12120 Reference: ESB-2019.0481 ESB-2018.3889.2 ESB-2018.3834 Original Bulletin: https://support.f5.com/csp/article/K75532331 - --------------------------BEGIN INCLUDED TEXT-------------------- K75532331:iRulesLX debug NodeJS vulnerability CVE-2019-6644 Security Advisory Original Publication Date: 09 Aug, 2019 Security Advisory Description Similar to the issue identified in CVE-2018-12120, the BIG-IP system will bind a debug nodejs process to all interfaces when invoked. This may expose the process to unauthorized users if the plugin is left in debug mode and the port is accessible. (CVE-2019-6644) Impact A remote attacker may be able to attach a remote computer to the debug port and evaluate arbitrary JavaScript. BIG-IP systems in a standard, default configuration are not vulnerable. This vulnerability requires the BIG-IP systems to be provisioned for iRulesLX and have a workspace that includes an extension configuration including the "-debug" flag, which must be manually added. Security Advisory Status F5 Product Development has assigned ID 754103 (BIG-IP) to this vulnerability. To determine if your product and version have been evaluated for this vulnerability, refer to the Applies to (see versions) box. 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. For more information about security advisory versioning, refer to K51812227: Understanding Security Advisory versioning. +-------------------+------+----------+----------+----------+------+----------+ | | |Versions |Fixes | |CVSSv3|Vulnerable| |Product |Branch|known to |introduced|Severity |score^|component | | | |be |in | |1 |or feature| | | |vulnerable| | | | | +-------------------+------+----------+----------+----------+------+----------+ | |15.x |None |Not | | | | | | | |applicable| | | | | +------+----------+----------+ | | | |BIG-IP (LTM, AAM, |14.x |14.1.0 |14.1.0.6 | | | | |AFM, Analytics, | |14.0.0 |14.0.0.5 | | | | |APM, ASM, DNS, Edge+------+----------+----------+ | | | |Gateway, FPS, GTM, |13.x |13.0.0 - |13.1.3 |High |7.7 |iRulesLX | |Link Controller, | |13.1.2 | | | | | |PEM, +------+----------+----------+ | | | |WebAccelerator) |12.x |12.1.3 - |12.1.4.1 | | | | | | |12.1.4 | | | | | | +------+----------+----------+ | | | | |11.x |None |Not | | | | | | | |applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ |Enterprise Manager |3.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-------------------+------+----------+----------+----------+------+----------+ | |6.x |None |Not | | | | |BIG-IQ Centralized | | |applicable|Not | | | |Management +------+----------+----------+vulnerable|None |None | | |5.x |None |Not | | | | | | | |applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ |F5 iWorkflow |2.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-------------------+------+----------+----------+----------+------+----------+ | |5.x |None |Not | | | | | | | |applicable|Not | | | |Traffix SDC +------+----------+----------+vulnerable|None |None | | |4.x |None |Not | | | | | | | |applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ ^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is possible that the document may be removed without our knowledge. 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 Fixes introduced in 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 should consider the following recommendations: o Permit management access to F5 products only over a secure network, and limit shell access to only trusted users. For more information about securing access to BIG-IP and Enterprise Manager systems, refer to K13309: Restricting access to the Configuration utility by source IP address (11.x - 15.x) and K13092: Overview of securing access to the BIG-IP system. o Lock down management port access and configure the self IP port lockdown feature to disallow unneeded ports on all self IP addresses. For more information, refer to K13250: Overview of port lockdown behavior (10.x - 11.x) or K17333: Overview of port lockdown behavior (12.x - 15.x). Note: The default self IP port-lockdown settings block the affected connections on self IP addresses. You must explicitly enable Allow-All or have the port on the Allow list in order to expose the vulnerability. o F5 recommends that you use the node debugger capabilities on a non-production BIG-IP system. - --------------------------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. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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