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AUSCERT External Security Bulletin Redistribution
ESB-2020.2599
Cisco SD-WAN Solution Software Buffer Overflow Vulnerability
30 July 2020
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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.
- --------------------------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 29 18:34 GMT
Version 1.1: 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 16.12.3
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 |
+---------+------------------------------+---------+--------+-------------+
| 1.1 | Updated source information. | - | Final | 2020-JUL-29 |
+---------+------------------------------+---------+--------+-------------+
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