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AUSCERT External Security Bulletin Redistribution
ESB-2020.0966
Cisco SD-WAN Solution Buffer Overflow Vulnerability
19 March 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco SD-WAN Solution
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Modify Arbitrary Files -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3264
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwanbo-QKcABnS2
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco SD-WAN Solution Buffer Overflow Vulnerability
Priority: High
Advisory ID: cisco-sa-sdwanbo-QKcABnS2
First Published: 2020 March 18 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvs47117
CVE-2020-3264
CWE-119
CVSS Score:
7.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
Summary
o 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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-sdwanbo-QKcABnS2
Affected Products
o 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.
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
Cisco has fixed this vulnerability in Cisco SD-WAN Solution software
Release 19.2.2.
To download the software from the Software Center on Cisco.com, click
Browse all and do the following:
vBond, vEdge Cloud, and vSmart
1. Navigate to Routers > Software-Defined WAN (SD-WAN) > SD-WAN > SD-WAN
Software Update .
2. From the left panel, click 19.2.2 under Latest Release .
3. Choose vSmart, vEdge Cloud, and vBond 19.2.2 upgrade image .
vEdge 100, 1000, and 2000 Series Routers
1. Navigate to Routers > Software-Defined WAN (SD-WAN) > vEdge Router >
vEdge Router Model .
2. From the left panel, click 19.2.2 under Latest Release .
3. Choose vEdge 19.2.2 Upgrade Image for vEdge 100b, vEdge 100m, vEdge
1000, vEdge 2000 Routers .
vManage Network Management Software
1. Navigate to Routers > Software-Defined WAN (SD-WAN) > SD-WAN > SD-WAN
Software Update .
2. From the left panel, click 19.2.2 under Latest Release .
3. Choose vManage 19.2.2 upgrade image .
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 Cisco would like to thank Orange Group for reporting this vulnerability.
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-sdwanbo-QKcABnS2
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-MAR-18 |
+----------+---------------------------+----------+--------+--------------+
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