Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0695.2 Node.js vulnerability 24 August 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: BIG-IP BIG-IQ Centralized Management Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-8277 Reference: ESB-2021.0587 ESB-2021.0112 ESB-2020.4214 Original Bulletin: https://support.f5.com/csp/article/K07944249 Revision History: August 24 2021: Vendor updated fixed software details February 25 2021: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- K07944249: Node.js vulnerability CVE-2020-8277 Original Publication Date: 25 Feb, 2021 Latest Publication Date: 24 Aug, 2021 Security Advisory Description A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. This is fixed in 15.2.1, 14.15.1, and 12.19.1. ( CVE-2020-8277) Impact BIG-IP iRules LX and BIG-IQ A remote attacker can exploit the vulnerability with DNS resolution to cause a denial-of-service (DoS) on the affected F5 product. BIG-IP iApps LX A local attacker can exploit the vulnerability with DNS resolution to cause a denial-of-service (DoS) on the affected F5 product. Security Advisory Status F5 Product Development has assigned ID 975589 (BIG-IP iRules LX), ID 985541 (BIG-IP iApps LX), and ID 985541-8 (BIG-IQ) 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, point 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| | | | | +-------------------+------+----------+----------+----------+------+----------+ | |16.x |16.0.0 - |16.1.0 | | | | | | |16.0.1 | | | | | | +------+----------+----------+ | | | | |15.x |15.1.0 - |None | | | | | | |15.1.3 | | | | | |BIG-IP (LTM, AAM, +------+----------+----------+ | | | |Advanced WAF, AFM, |14.x |14.1.0 - |14.1.4.4 | | | | |Analytics, APM, | |14.1.4 | | | |iRules LX | |ASM, DDHD, DNS, +------+----------+----------+High |7.5 |(Node.js) | |FPS, GTM, Link |13.x |13.1.0 - |None | | | | |Controller, PEM, | |13.1.4 | | | | | |SSLO) +------+----------+----------+ | | | | |12.x |12.1.0 - |Will not | | | | | | |12.1.6 |fix | | | | | +------+----------+----------+ | | | | |11.x |None |Not | | | | | | | |Applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ | |16.x |16.0.0 - |None | | | | | | |16.1.0 | | | | | | +------+----------+----------+ | | | | |15.x |15.1.0 - |None | | | | | | |15.1.3 | | | | | |BIG-IP (LTM, AAM, +------+----------+----------+ | | | |Advanced WAF, AFM, |14.x |14.1.0 - |None | | | | |Analytics, APM, | |14.1.4 | | | |iApps LX | |ASM, DDHD, DNS, +------+----------+----------+Medium |5.5 |(Node.js) | |FPS, GTM, Link |13.x |13.1.0 - |None | | | | |Controller, PEM, | |13.1.4 | | | | | |SSLO) +------+----------+----------+ | | | | |12.x |12.1.0 - |Will not | | | | | | |12.1.6 |fix | | | | | +------+----------+----------+ | | | | |11.x |None |Not | | | | | | | |Applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ | |8.x |8.0.0 - |None | | | | | | |8.1.0 | | | | | |BIG-IQ Centralized +------+----------+----------+ | | | |Management |7.x |7.1.0 |None |High |7.5 |Node.js | | +------+----------+----------+ | | | | |6.x |None |Not | | | | | | | |applicable| | | | +-------------------+------+----------+----------+----------+------+----------+ |F5OS |1.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-------------------+------+----------+----------+----------+------+----------+ |Traffix SDC |5.x |None |Not |Not |None |None | | | | |applicable|vulnerable| | | +-------------------+------+----------+----------+----------+------+----------+ ^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. 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 BIG-IP iApps LX To mitigate this vulnerability, you should permit management access to the BIG-IP system only over a secure network and restrict command-line access for affected systems to only trusted users. For more information about this mitigation, refer to K13309: Restricting access to the Configuration utility by source IP address (11.x - 16.x) and K13092: Overview of securing access to the BIG-IP system. Supplemental Information o K41942608: Overview of security advisory articles o K4602: Overview of the F5 security vulnerability response policy o K4918: Overview of the F5 critical issue hotfix policy o K9502: BIG-IP hotfix and point release matrix o K13123: Managing BIG-IP product hotfixes (11.x - 16.x) o K15106: Managing BIG-IQ product hotfixes o K15113: BIG-IQ hotfix and point release matrix o K167: Downloading software and firmware from F5 o K9970: Subscribing to email notifications regarding F5 products o K9957: Creating a custom RSS feed to view new and updated documents - --------------------------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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYSSCPONLKJtyKPYoAQhYkQ//QGut4C1HNtCccDAPDhtQZwVpnTq3Q3k3 7LPxDVtqFC6CgJ1E0f57Z650uaMO0hJPl5Ue4YkEhRZlur2jvVHgAsHLb7gxSGvm 0/GiVKB6X/tB99+Nb4QBPuVIA5+eWX5I8ENZP74/L+0jtPLGLsFUQarlifv7elIF 1K/ASLUW77T9RnIA9nWXvqU/URhtnXMZ+c3dXWJxDPg9tZ2k3BvzwffVMb3DoBzJ PYsJEBFsOk959Cgwg1HWwT+Xje/mzUj9q9xEz5Vy8Wwk8VxHIWY/BBHpw1KQ6Q8+ eio7oFoTCzykoA+nl5TCLHJmvqiE2FnrBLq0al8EXCQnv3tZLr7jMVJVJQfUHcD0 a+PRp9Hd0eL3RgwRZBWmP3LTeFeN00w3rZYb77fjQSr07gpoxIhy+jKLcH115dcX Tr7xdMNASMZ6vqK+w3nVD1wtY4r7KO4p5IdLzokSsXyuTt99ze09xteme0Bg3e+l NoT1lLxiVzmV93VSMIYcCl1MaebijxFgyfeKP7rpJZ4XIplAh0hr7iRKmcNYlKWO Wv94PvdIMiUxWWomoejoM3cEddN+24fKJ1CSrPUTGSKqI6IqKvrufUKB8Vxb2/f8 J3DBNzkWL/x3PropXX8Co4E97/SjFQlncKJO2wuPBRI0GeG5U6K8ezu7wwzuViJf nRthW+1ZKKM= =Lwvm -----END PGP SIGNATURE-----