Summary

• Multiple vulnerabilities in Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to execute arbitrary code or gain access to sensitive information, or allow an authenticated, local attacker to gain escalated privileges or gain unauthorized access to the application.

  For more information about these vulnerabilities, see the Details section of this advisory.

  Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

  This advisory is available at the following link:
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sd-wan-vmanage-4TbynnhZ

Affected Products

• Vulnerable Products

  These vulnerabilities affect Cisco devices if they are running a vulnerable release of Cisco SD-WAN vManage 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 these vulnerabilities.

  Cisco has confirmed that these vulnerabilities do not affect the following Cisco products:

  • IOS XE SD-WAN Software
  • SD-WAN cEdge Routers
  • SD-WAN vBond Orchestrator Software
  • SD-WAN vEdge Routers
  • SD-WAN vSmart Controller Software

Details

• The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit another vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerabilities.

  Several of the vulnerabilities below only impact Cisco SD-WAN vManage Software that is operating in a cluster. Customers can verify whether the software is operating in cluster mode by checking the Cisco SD-WAN vManage web-based management interface Administration > Cluster Management view. Customers should also refer to the Cisco SD-WAN Getting Started Guide chapter on Cluster Management.

  Details about the vulnerabilities are as follows:

  CVE-2021-1468: Cisco SD-WAN vManage Cluster Mode Unauthorized Message Processing Vulnerability

  A vulnerability in a messaging service of Cisco SD-WAN vManage Software when operating in cluster mode could allow an unauthenticated, remote attacker to send unauthorized messages to the vulnerable application.

  This vulnerability is due to improper authentication checks on user-supplied input to an application messaging service. An attacker could exploit this vulnerability by submitting crafted input to the service. A successful exploit could allow the attacker to call privileged actions within the affected system, including creating new administrative level user accounts.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvu28454
  CVE ID: CVE-2021-1468
  Security Impact Rating (SIR): Critical
  CVSS Base Score: 9.8
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  CVE-2021-1505: Cisco SD-WAN vManage Cluster Mode Privilege Escalation Vulnerability

  A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software when operating in cluster mode could allow an authenticated, remote attacker to bypass authorization checking and gain elevated privileges within an affected system.

   

  This vulnerability exists because the affected software does not perform authorization checks on certain operations. An attacker could exploit this vulnerability by sending crafted requests to the affected system. A successful exploit could allow the attacker to bypass authorization checks and gain elevated privileges within the affected system.

   

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvu28390
  CVE ID: CVE-2021-1505
  Security Impact Rating (SIR): Critical
  CVSS Base Score: 9.1
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

  CVE-2021-1508: Cisco SD-WAN vManage Cluster Mode Unauthorized Access Vulnerability

  A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software when operating in cluster mode could allow an authenticated, remote attacker to bypass authorization checking and make application modifications that could allow the attacker to gain elevated privileges within an affected system.
   
  This vulnerability exists because the affected software does not perform authorization checks on certain operations. An attacker could exploit this vulnerability by sending crafted requests to the affected system. A successful exploit could allow the attacker to bypass authorization checks and gain elevated privileges within the affected system.
   
  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvu28360

  CVE ID: CVE-2021-1508

  Security Impact Rating (SIR): High

  CVSS Base Score: 8.1

  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

   

  CVE-2021-1275: Cisco SD-WAN vManage Denial of Service Vulnerability

  A vulnerability in an API of Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected system.

  The vulnerability is due to insufficient handling of API requests to the affected system. An attacker could exploit this vulnerability by sending a large amount of API requests to the affected system. A successful exploit could allow the attacker to cause a DoS condition on the affected system.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvv67264
  CVE ID: CVE-2021-1275
  Security Impact Rating (SIR): High
  CVSS Base Score: 7.5
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  CVE-2021-1506: Cisco SD-WAN vManage Cluster Mode Unauthorized Services Access Vulnerability

  A vulnerability in a service of Cisco SD-WAN vManage Software when operating in cluster mode could allow an authenticated, remote attacker to gain unauthorized access to services within an affected system.
   
  This vulnerability exists because the affected software does not perform authorization checks on service access. An attacker could exploit this vulnerability by sending crafted requests to the affected system. A successful exploit could allow the attacker to bypass authorization checks and gain unauthorized access to services within the affected system.
   
  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvu28402
  CVE ID: CVE-2021-1506
  Security Impact Rating (SIR): High
  CVSS Base Score: 7.2
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Workarounds

• There are no workarounds that address these vulnerabilities.

Fixed Software

• Cisco has released free software updates that address the vulnerabilities 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 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). To ensure a complete upgrade solution, consider that this advisory is part of a collection that includes the following advisories:

  • cisco-sa-sd-wan-vmanage-4TbynnhZ: Cisco SD-WAN vManage Software Vulnerabilities
  • cisco-sa-sdw-auth-bypass-65aYqcS2: Cisco SD-WAN vManage Software Authentication Bypass Vulnerability
  • cisco-sa-sdwan-dos-Ckn5cVqW: Cisco SD-WAN Software vDaemon Denial of Service Vulnerability
  • cisco-sa-sdwan-buffover-MWGucjtO: Cisco SD-WAN vEdge Software Buffer Overflow Vulnerabilities

   

  Cisco SD-WAN vManage Software Release	First Fixed Release for All Defects in This Advisory	First Fixed Release for all Vulnerabilities Described in the Collection of Advisories
  18.4 and earlier	Migrate to a fixed release.	Migrate to a fixed release.
  19.2	Migrate to a fixed release.	Migrate to a fixed release.
  20.1	Migrate to a fixed release.	Migrate to a fixed release.
  20.3	20.3.3	Migrate to a fixed release.
  20.4	20.4.1	20.4.1
  20.5	20.5.1	20.5.1

Exploitation and Public Announcements

• The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

Source

• CVE-2021-1275: This vulnerability was found during the resolution of a Cisco TAC support case.

  CVE-2021-1468 and CVE-2021-1506: These vulnerabilities were found by N.S. of Cisco during internal security testing.

  CVE-2021-1505 and CVE-2021-1508: These vulnerabilities were found by Alex Lumsden of Cisco during internal security testing.

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sd-wan-vmanage-4TbynnhZ

Revision History

• Version	Description	Section	Status	Date
  1.0	Initial public release.	—	Final	2021-MAY-05

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