Cisco Security Advisory
Cisco SD-WAN Solution Buffer Overflow Vulnerability
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CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
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A vulnerability in Cisco SD-WAN Solution software could allow an authenticated, local 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 and make changes to the system that they are not authorized to make.
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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwanbo-QKcABnS2
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Vulnerable Products
This vulnerability affects the following Cisco products if they are running a Cisco SD-WAN Solution software release earlier than Release 19.2.2:
- vBond Orchestrator Software
- vEdge 100 Series Routers
- vEdge 1000 Series Routers
- vEdge 2000 Series Routers
- vEdge 5000 Series Routers
- vEdge Cloud Router Platform
- vManage Network Management Software
- vSmart Controller Software
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
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There are no workarounds that address this vulnerability.
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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
Cisco has fixed this vulnerability in Cisco SD-WAN Solution software Releases 18.4.5, 19.2.2, 20.1.1, 20.3.1 and later.
To download the software from the Software Center on Cisco.com, click Browse all and do the following:
vBond, vEdge Cloud, and vSmart
- Navigate to Routers > Software-Defined WAN (SD-WAN) > SD-WAN > SD-WAN Software Update.
- From the left panel, click 19.2.2 under Latest Release.
- Choose vSmart, vEdge Cloud, and vBond 19.2.2 upgrade image.
vEdge 100, 1000, and 2000 Series Routers
- Navigate to Routers > Software-Defined WAN (SD-WAN) > vEdge Router > vEdge Router Model.
- From the left panel, click 19.2.2 under Latest Release.
- Choose vEdge 19.2.2 Upgrade Image for vEdge 100b, vEdge 100m, vEdge 1000, vEdge 2000 Routers.
vManage Network Management Software
- Navigate to Routers > Software-Defined WAN (SD-WAN) > SD-WAN > SD-WAN Software Update.
- From the left panel, click 19.2.2 under Latest Release.
- Choose vManage 19.2.2 upgrade image.
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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.
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Cisco would like to thank Orange Group for reporting this vulnerability.
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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.
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Show LessVersion Description Section Status Date 1.1 Updated Fixed Releases. Fixed Releases Final 2021-JUN-23 1.0 Initial public release. - Final 2020-MAR-18
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