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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.4492 TACACS+ audit forwarding uses an unencrypted database variable to store passwords 18 December 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: TACACS+ Publisher: F5 Networks Operating System: Network Appliance Impact/Access: Access Confidential Data -- Existing Account Resolution: Patch/Upgrade Original Bulletin: https://support.f5.com/csp/article/K21404407 - --------------------------BEGIN INCLUDED TEXT-------------------- K21404407: TACACS+ audit forwarding uses an unencrypted database variable to store passwords Original Publication Date: 17 Dec, 2020 Security Advisory Description The audit forwarding mechanism for Terminal Access Controller Access-Control System Plus (TACACS+) uses an unencrypted database variable to store passwords. BIG-IP This issue occurs when all the following conditions are met: o You configure TACACS+ to enable audit forwarding. For more information on TACACS+ audit forwarding, refer to K13762: Configuring remote RADIUS or TACACS+ accounting. BIG-IQ This issue occurs when all the following conditions are met: o You configure TACACS+ to enable audit forwarding. o In the BIG-IQ system, you can configure TACACS+ authentication for log in to the Configuration utility or the command line. This vulnerability only affects the command line. Impact The system leaks sensitive information to authenticated users who have access to the BIG-IP system. Symptoms As a result of this issue, you may encounter one or more of the following symptoms: o The TACACS shared key in the database variable is not encrypted and is visible to administrators or read-only users. Security Advisory Status F5 Product Development has assigned ID 706521 (BIG-IP) and ID 706521-8 (BIG-IQ) to this issue. F5 has confirmed that this issue exists in the products listed in the Applies to (see versions) box, located in the upper-right corner of this article. For information about releases, point releases, or hotfixes that resolve this issue, refer to the following table. +------------------+-----------------+----------------------------------------+ |Type of fix |Fixes introduced |Related articles | | |in | | +------------------+-----------------+----------------------------------------+ |Release |16.0.1 |K2200: Most recent versions of F5 | | |15.1.1 |software | +------------------+-----------------+----------------------------------------+ |Point release/ |14.1.3.1 |K9502: BIG-IP hotfix and point release | |hotfix |13.1.3.5 |matrix | +------------------+-----------------+----------------------------------------+ Security Advisory Recommended Actions Workaround None Supplemental Information o K51812227: Understanding security advisory versioning o K41942608: Overview of AskF5 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 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. 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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 iQIVAwUBX9wul+NLKJtyKPYoAQgKlBAAm0ekXPZH95AWCr0/QQDvMtvMBc2cFXwq uyJjENqqnbo1purAb80z6XumYIUDDd2tplApsgZrs+I6QMHybp+u3p1HjZ7uNHpT JNiI7ZdMcNyjEbMekczIuysgzMtBl4SDYF/BqEoEwUNucF0bcDBysRzmKhkhaD9X XWbYyd5kIQ75KUVSLH1XxmP8Y2sf8lP0+c2iSsxb/8NxP1dePNFssEGi/Ggp5D6g Y9b+4Df0p6bD4QX6sh1igVEJiXh9Wg1Pnca5H5pgEEl8D7w5i37i7JG1UeMgHZ3C KhD36lZrjEGqmgTF2pMjW7w25jW3U1UR/aZv2EnwytcPgu4ymuJvTyX085sNblDD 08TwC1WGvo32AlqK2I96UfKYcoaEgBInO71nWQb8Nhs6BkHqynUIRujEGo4XZAb8 6zMKJ0uxDLORRV9vA5XPHn9Mrk4h1PT9LT+jE8QDmdsJRkARUo4+4MBjYi9ZlIj1 ip/wsM1Otzu9ZX2lWq2MXf2L0MTj+4BgEsXtndCS0DqDhku1psDOUVvgtarG9sVw TXTPnJWK6ZtqEwyLhKygtxbehtHblUgfAghi5NAgfUISpg9D4Jz4EmceehGGsgqR DYtd2whiavXRdoLV6XybSvnK7ckWsqU8IWAUveRL9dTiDK8jVlQJGMIf8kPIA/R/ /uu00+PfMPM= =Uxmz -----END PGP SIGNATURE-----