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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.2599.2 Cisco SD-WAN Solution Software Buffer Overflow Vulnerability 31 July 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco SD-WAN Solution Software Publisher: Cisco Systems Operating System: Network Appliance Impact/Access: Root Compromise -- Remote/Unauthenticated Execute Arbitrary Code/Commands -- Remote/Unauthenticated Modify Arbitrary Files -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-3375 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdbufof-h5f5VSeL Comment: Cisco is not aware of active exploitation of this vulnerability. Revision History: July 31 2020: Vendor updated fixed software section. July 30 2020: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco SD-WAN Solution Software Buffer Overflow Vulnerability Priority: Critical Advisory ID: cisco-sa-sdbufof-h5f5VSeL First Published: 2020 July 29 16:00 GMT Last Updated: 2020 July 30 17:13 GMT Version 1.2: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvt11538 CVE-2020-3375 CWE-119 CVSS Score: 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X Summary o A vulnerability in Cisco SD-WAN Solution Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to information that they are not authorized to access, make changes to the system that they are not authorized to make, and execute commands on an affected system with privileges of the root user. 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-sdbufof-h5f5VSeL Affected Products o Vulnerable Products This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco SD-WAN Solution Software: IOS XE SD-WAN Software SD-WAN vBond Orchestrator Software SD-WAN vEdge Cloud Routers SD-WAN vEdge Routers SD-WAN vManage Software SD-WAN vSmart Controller Software For information about which Cisco software releases are vulnerable, see the Fixed Software section of this advisory. 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 the following Cisco products: Adaptive Security Appliance (ASA) Software IOS Software IOS XE Software NX-OS Software Workarounds o There are no workarounds that address this vulnerability. Fixed Software o Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license: https://www.cisco.com/c/en/us/products/ end-user-license-agreement.html Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades. When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts 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. Customers Without Service Contracts Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c /en/us/support/web/tsd-cisco-worldwide-contacts.html Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Fixed Releases Customers are advised to upgrade to an appropriate fixed software release as indicated in the following table(s): SD-WAN vManage Software Cisco SD-WAN vManage Software Release First Fixed Release 18.3.0 Migrate to a fixed release. 18.4.0 18.4.5 19.2.0 19.2.3 19.3.0 Migrate to a fixed release. 20.1.0 20.1.1 SD-WAN vEdge, vBond, and vSmart Software Cisco SD-WAN vEdge, vBond, and vSmart First Fixed Release Software Releases 18.3.0 Migrate to a fixed release. 18.4.0 18.4.5 19.2.0 19.2.3 19.3.0 Migrate to a fixed release. 20.1.0 20.1.1 IOS XE SD-WAN Software Cisco IOS XE SD-WAN Software Release First Fixed Release 16.9 Migrate to a fixed release. 16.10 Migrate to a fixed release. 16.11 Migrate to a fixed release. 16.12 16.12.4 17.2 17.2.1r Exploitation and Public Announcements o The Cisco Product Security Incident Response Team (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 internal security testing by James Spadaro of the Cisco Advanced Security Initiatives Group (ASIG). 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. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-sdbufof-h5f5VSeL Revision History o +---------+--------------------------+-------------+--------+-------------+ | Version | Description | Section | Status | Date | +---------+--------------------------+-------------+--------+-------------+ | 1.0 | Initial public release. | - | Final | 2020-JUL-29 | +---------+--------------------------+-------------+--------+-------------+ | 1.2 | Updated Fixed Software | Fixed | Final | 2020-JUL-29 | | | section. | Software | | | +---------+--------------------------+-------------+--------+-------------+ | 1.1 | Updated source | - | Final | 2020-JUL-29 | | | information. | | | | +---------+--------------------------+-------------+--------+-------------+ - --------------------------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). 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