Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3202 BIG-IP APM XSS vulnerability CVE-2021-23054 24 September 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: BIG-IP (APM) Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Cross-site Scripting -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2021-23054 Original Bulletin: https://support.f5.com/csp/article/K41997459 - --------------------------BEGIN INCLUDED TEXT-------------------- K41997459: BIG-IP APM XSS vulnerability CVE-2021-23054 Original Publication Date: 24 Sep, 2021 Security Advisory Description A reflected cross-site scripting (XSS) vulnerability exists in the resource information page for authenticated users when a full webtop is configured on the BIG-IP APM system. (CVE-2021-23054) Impact An attacker can craft a malicious URL and send it to an authenticated user to launch a XSS attack. Security Advisory Status F5 Product Development has assigned ID 981273 (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, 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. Note: After a fix is introduced for a given minor branch, that fix applies to all subsequent maintenance and point releases for that branch, and no additional fixes for that branch will be listed in the table. For example, when a fix is introduced in 14.1.2.3, the fix also applies to 14.1.2.4, and all later 14.1.x releases (14.1.3.x., 14.1.4.x). For more information, refer to K51812227: Understanding security advisory versioning. Additionally, software versions preceding those listed in the following table have reached the End of Technical Support (EoTS) phase of their lifecycle and are no longer evaluated for security issues. For more information, refer to the Security hotfixes section of K4602: Overview of the F5 security vulnerability response policy. +------------------+------+-----------+----------+----------+------+----------+ | | |Versions |Fixes | |CVSSv3|Vulnerable| |Product |Branch|known to be|introduced|Severity |score^|component | | | |vulnerable^|in | |2 |or feature| | | |1 | | | | | +------------------+------+-----------+----------+----------+------+----------+ | | |None |16.1.0 | | | | | |16.x +-----------+----------+ | | | | | |16.0.0 - |Will not | | | | | | |16.0.1 |fix | | | | | +------+-----------+----------+ | | | | |15.x |15.1.0 - |15.1.4 | | | | | | |15.1.3 | | | | | | +------+-----------+----------+ | | | | |14.x |14.1.0 - |14.1.4.4 | | |BIG-IP APM| |BIG-IP (APM) | |14.1.4 | |Medium |4.7 |with full | | +------+-----------+----------+ | |webtop | | |13.x |13.1.0 - |None | | | | | | |13.1.4 | | | | | | +------+-----------+----------+ | | | | |12.x |12.1.0 - |Will not | | | | | | |12.1.6 |fix | | | | | +------+-----------+----------+ | | | | |11.x |11.6.1 - |Will not | | | | | | |11.6.5 |fix | | | | +------------------+------+-----------+----------+----------+------+----------+ | |16.x |None |Not | | | | | | | |applicable| | | | | +------+-----------+----------+ | | | | |15.x |None |Not | | | | | | | |applicable| | | | |BIG-IP (LTM, AAM, +------+-----------+----------+ | | | |Advanced WAF, AFM,|14.x |None |Not | | | | |Analytics, ASM, | | |applicable|Not | | | |DDHD, DNS, FPS, +------+-----------+----------+vulnerable|None |None | |GTM, Link |13.x |None |Not | | | | |Controller, PEM, | | |applicable| | | | |SSLO) +------+-----------+----------+ | | | | |12.x |None |Not | | | | | | | |applicable| | | | | +------+-----------+----------+ | | | | |11.x |None |Not | | | | | | | |applicable| | | | +------------------+------+-----------+----------+----------+------+----------+ | |8.x |None |Not | | | | | | | |applicable| | | | | +------+-----------+----------+ | | | |BIG-IQ Centralized|7.x |None |Not |Not |None |None | |Management | | |applicable|vulnerable| | | | +------+-----------+----------+ | | | | |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| | | +------------------+------+-----------+----------+----------+------+----------+ ^1F5 evaluates only software versions that have not yet reached the End of Technical Support (EoTS) phase of their lifecycle. ^2The 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 installing a version listed in the Fixes introduced in column. If the Fixes introduced in column does not list a version for your branch, then no update candidate currently exists for that branch and F5 recommends upgrading to a version with the fix (refer to the table). If the Fixes introduced in column lists a version prior to the one you are running, in the same branch, then your version should have the fix. Mitigation To mitigate this vulnerability, you can associate an iRule to the affected BIG-IP APM virtual server. For more information about the iRule, contact F5 Support and reference this article number. Acknowledgements This issue was reported to F5 by a source that chooses to remain anonymous. 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 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 iQIVAwUBYU0DEuNLKJtyKPYoAQiJ2A/+JELos1kA11/2V9iAn110yYQcgQdbq/3G m7WzN0yHeN2rK2VtrlBLYhw00YLZHs58t55f55jZgJzJxBLh1o4N7cDPoxJz0Cai B6bzILIXDra2JwLhOVUi0AdRyPmWKWj4Ah2sKgQxgR35mQSXJGSthC10ojYd3zZN zhUD76bleuq2G6TaDA/AyaV40PlBOJX3uGJy4q9qhRFXZeJ9ivqU43Mfa4lHlVCW 0hcHKy4AvP8cpS2/H6VrYEZkuDU9L/pBxiI8S0McyrvB7ugMEf2/qd3QOdgLngRL iSEc/Qc4IZCxyIJmSTXWLyc5XHFUEhAU6p+VdLER88zJBZpO2AS9GFa+zX/Oe7Dv nlJuwsUt8sMajiPIgZ7Pjx4dvB53ejmTZZ8j7gqyUTyreT8SnDsBgrHdTE64fCB/ z3w0ncTpoCXxN3JShwUSww/fX00BqovX9Tso/rFZVRTg2beDEmxeT6tIjXCwRvQ9 uq0FMTR9MEZdyn+NNbXepf6E9BeIWiywHYz69pz7+SKro4QdkS9+lsf64TQQdA5j S+RiphoDQBx58MQYNR+tXqNzwDKtIzZ8Fbm90pnfwUawC/q0uwNFc6AU80AejEkT Fe2CyEtZrinbHAsEkZbkA4X+0TxC38iV1i9Oc8mLWylWPWcVW+x+PJKgClpQbOt+ 7LOWh0EmGc4= =BbcV -----END PGP SIGNATURE-----