Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.1919 Cisco Firepower Threat Defense Software Security Intelligence DNS Feed Bypass Vulnerability 29 April 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Firepower Threat Defense Software Publisher: Cisco Systems Operating System: Cisco Resolution: Patch/Upgrade CVE Names: CVE-2022-20730 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-sidns-bypass-3PzA5pO Comment: CVSS (Max): 4.0 CVE-2022-20730 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N) CVSS Source: Cisco Systems Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Firepower Threat Defense Software Security Intelligence DNS Feed Bypass Vulnerability Priority: Medium Advisory ID: cisco-sa-ftd-sidns-bypass-3PzA5pO First Published: 2022 April 27 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvz65181 CVE Names: CVE-2022-20730 CWEs: CWE-241 Summary o A vulnerability in the Security Intelligence feed feature of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the Security Intelligence DNS feed. This vulnerability is due to incorrect feed update processing. An attacker could exploit this vulnerability by sending traffic through an affected device that should be blocked by the affected device. A successful exploit could allow the attacker to bypass device controls and successfully send traffic to devices that are expected to be protected by the affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-sidns-bypass-3PzA5pO This advisory is part of the April 2022 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see Cisco Event Response: April 2022 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication . Affected Products o Vulnerable Products At the time of publication, this vulnerability affected Cisco FTD Software. For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Cisco has confirmed that this vulnerability does not affect Cisco Adaptive Security Appliance (ASA) Software or Cisco Firepower Management Center (FMC) Software. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page , to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Fixed Releases At the time of publication, the release information in the following table (s) was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability described in this advisory and which release included the fix for this vulnerability. Cisco FTD Software Release First Fixed Release for This Vulnerability 6.2.2 and earlier ^1 Migrate to a fixed release. 6.2.3 Not vulnerable. 6.3.0 ^1 Migrate to a fixed release. 6.4.0 6.4.0.15 6.5.0 ^1 Migrate to a fixed release. 6.6.0 6.6.5.2 6.7.0 Migrate to a fixed release. 7.0.0 7.0.2 (May 2022) 7.1.0 Not vulnerable. 1. Cisco FMC and FTD Software releases 6.2.2 and earlier, as well as releases 6.3.0 and 6.5.0, have reached end of software maintenance . Customers are advised to migrate to a supported release that includes the fix for this vulnerability. For instructions on upgrading your FTD device, see Cisco Firepower Management Center Upgrade Guide . The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory. Exploitation and Public Announcements o The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source o This vulnerability was found during the resolution of a Cisco TAC support case. Cisco Security Vulnerability Policy o To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy . This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. Related to This Advisory o Cisco Event Response: April 2022 Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-sidns-bypass-3PzA5pO Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2022-APR-27 | +----------+---------------------------+----------+--------+--------------+ - --------------------------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 iQIVAwUBYmsyt+NLKJtyKPYoAQjk/hAAqfERx8+BWdfQhEPkm4ahqKHGFhFfx4Xm oi2JE4zfZ1hqGw1KVQwqLD+vD+XOwAmJbQBA9eGqhhQFyE6MYcQZL/Y3YLrUJwkp SBorHh6RSBmIxDJIVjSLLHkK9EZLCY9XxMPggY6GPeNLfkIAjjozgm5kqENAxAwE +mlcb6uPtxwLN27wH+iCJN9rdcP+SJ/0tQRXCbFv0eS+oqLgcUuUaDzgYXEgk6Pz iAZ2kgWzqZgbaIYtjX5/Sp1EMy8IvUFOoHfqTortgwylHL8aNV3t93L277aKy/os Y4P+uhJo2hJNJpKK6nKor5j1xo0TUixjAujFyTOstS9oeFKQOJSC2fm9YkZK7ZVt 9YjEbHWPjdn2RkV4VQcjJImyv7nVciIJORIfgBmTMNneJwsG6Mk9pXYC1u8e4QFA 6a5mc7ePTRUc7NAcOkX85+r3DgAZgGxKVNKS7e0pg25O120453mmR1VgP/C0hj+k siaHSRAqQ8rCQ8rNDZMLtHsGdUCgP/omY0HxcVQKht8ZKVabri1Lnl9H4cwu7PRK hYQLtJH+plXZqnJN6hnGXOUop6w+elcbdivF7UCA7sAc2909M/lB3tOtbspp3MZU ivTv9rZl7OCW6ywJS6MRHvZ1m5MmYDyw9uRdJZeqpPHTA2Y7ph3m3YDWNaJhOIRf OVDV394sIs0= =jCJ1 -----END PGP SIGNATURE-----