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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1814 Cisco Nexus 4000 Series Switch Simple Network Management Protocol Polling Denial of Service Vulnerability 21 June 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Nexus 4000 Series Publisher: Cisco Systems Operating System: Cisco Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-0299 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-n4k-snmp-dos - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Security Advisory: Cisco Nexus 4000 Series Switch Simple Network Management Protocol Polling Denial of Service Vulnerability Advisory ID: cisco-sa-20180620-n4k-snmp-dos Revision: 1.0 For Public Release: 2018 June 20 16:00 GMT Last Updated: 2018 June 20 16:00 GMT CVE ID(s): CVE-2018-0299 CVSS Score v(3): 7.7 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H +--------------------------------------------------------------------- Summary ======= A vulnerability in the Simple Network Management Protocol (SNMP) feature of the Cisco Nexus 4000 Series Switch could allow an authenticated, remote attacker to cause the device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete validation of an SNMP poll request for a specific MIB. An attacker could exploit this vulnerability by sending a specific SNMP poll request to the targeted device. An exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. 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-20180620-n4k-snmp-dos This advisory is part of the June 2018 Cisco FXOS and NX-OS Software Security Advisory Collection, which includes 24 Cisco Security Advisories that describe 24 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: June 2018 Cisco FXOS and NX-OS Software Security - --------------------------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 iQIVAwUBWysN02aOgq3Tt24GAQg1Xg//SnJcS00+AFc81fo1R2yP8pIjwLESYU7J yzro7PHHWEvPjFTspJkP9L4vgp/SNKifrKYvDeeC/jy1nM7pzN2ttmFpinlxMmqK TCb9Og5BdzxdefXyeXImwZezCAllaq92+0qTN7/vE4tbdTpo+oiinCa3bpspN7w7 sAKbUkGRa2SKMM/he+DisVQ1ICD43yue2g3rEiRb6QhHVHd7/Yzkffv31gpzBXKG QYgd3IZ6Rh+70Hmihn5oMxYaJgdIDHA0BmR+pCxoF/MXJYm+HUK9Wr5HP0wQCaB2 DRiduIT5/uo7QqBb2jXzSrAvoJQauxhRalG2Qj7vM9+Ye0u5FAr8uvNS0vSe/CNf jd/yn51/E08EprJsSdojc2IpiAzqPAMX48CBzFvXygAjP9ZDfHF8JHS5uENFLliK 8PozLjk90NL2JoWVqhmzbF27Es7BBX6qHQFM80YYS7Lr/W8ZUjWX22TceUxYr9qU KG0yY92612AE0v4LqTOzx51I7LS+6o6P6cd+Y2noQUhwhj9K1jaAd5tloqZVZbs8 M+XcpTWlR6ehaHWIJpgCEH20wfstoavg1y9Sf6ck2HbCC3V5B0peQkwyhgQkjakl 8ghLBZLFHKQ5vWYOxN63DZXhmzF/EJL7unCz37T7vrTpD0nbsk031pradrsYpdoV yAyCAgjYjQM= =0UDX -----END PGP SIGNATURE-----