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AUSCERT External Security Bulletin Redistribution
ESB-2021.0390
Cisco Small Business RV Series Routers Management Interface Vulnerabilities
4 February 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Small Business RV Series Routers Management Interface
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Root Compromise -- Existing Account
Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-1348 CVE-2021-1347 CVE-2021-1346
CVE-2021-1345 CVE-2021-1344 CVE-2021-1343
CVE-2021-1342 CVE-2021-1341 CVE-2021-1340
CVE-2021-1339 CVE-2021-1338 CVE-2021-1337
CVE-2021-1336 CVE-2021-1335 CVE-2021-1334
CVE-2021-1333 CVE-2021-1332 CVE-2021-1331
CVE-2021-1330 CVE-2021-1329 CVE-2021-1328
CVE-2021-1327 CVE-2021-1326 CVE-2021-1325
CVE-2021-1324 CVE-2021-1323 CVE-2021-1322
CVE-2021-1321 CVE-2021-1320 CVE-2021-1319
CVE-2021-1318 CVE-2021-1317 CVE-2021-1316
CVE-2021-1315 CVE-2021-1314
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-command-inject-BY4c5zd
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-ghZP68yj
Comment: This bulletin contains two (2) Cisco Systems security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Small Business RV Series Routers Management Interface Command Injection
Vulnerabilities
Priority: High
Advisory ID: cisco-sa-rv-command-inject-BY4c5zd
First Published: 2021 February 3 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvv97021 CSCvv97022 CSCvv97023 CSCvv97024 CSCvv97025
CVE Names: CVE-2021-1314 CVE-2021-1315 CVE-2021-1316 CVE-2021-1317
CVE-2021-1318
CWEs: CWE-20
Summary
o Multiple vulnerabilities in the web-based management interface of Cisco
Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could
allow an authenticated, remote attacker to inject arbitrary commands that
are executed with root privileges.
These vulnerabilities are due to improper validation of user-supplied input
in the web-based management interface. An attacker could exploit these
vulnerabilities by sending crafted HTTP requests to a targeted device. A
successful exploit could allow the attacker to execute arbitrary code as
the root user on the underlying operating system. To exploit these
vulnerabilities, an attacker would need to have valid administrator
credentials on an affected device.
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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-command-inject-BY4c5zd
Affected Products
o Vulnerable Products
These vulnerabilities affect the following Cisco Small Business routers and
firmware releases:
Product Firmware Release
RV016 Multi-WAN VPN Routers 4.2.3.14 and earlier
RV042 Dual WAN VPN Routers 4.2.3.14 and earlier
RV042G Dual Gigabit WAN VPN Routers 4.2.3.14 and earlier
RV082 Dual WAN VPN Routers 4.2.3.14 and earlier
RV320 Dual Gigabit WAN VPN Routers 1.5.1.11 and earlier
RV325 Dual Gigabit WAN VPN Routers 1.5.1.11 and earlier
The web-based management interface of these devices is available through a
local LAN connection, which cannot be disabled, or through the WAN
connection if the remote management feature is enabled. By default, the
remote management feature is disabled for these devices.
Determine the Device Configuration
To determine whether the remote management feature is enabled for a device,
open the web-based management interface and choose Basic Settings > Remote
Management . If the Enable check box is checked, remote management is
enabled for the device.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by these vulnerabilities.
Workarounds
o There are no workarounds that address these vulnerabilities.
Fixed Software
o 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
Cisco fixed these vulnerabilities in Cisco RV320 and RV325 Dual Gigabit WAN
VPN Routers Firmware Release 1.5.1.13.
Cisco has not released and will not release firmware updates for the Cisco
RV016, RV042, RV042G, and RV082 Routers to address the vulnerabilities
described in this advisory. These products have entered the end-of-life
process. Customers are advised to refer to the end-of-life notices for
these products:
End-of-Sale and End-of-Life Announcement for the Cisco RV016 Multi-WAN
VPN Router
End-of-Sale and End-of-Life Announcement for the Cisco RV042 and RV042G
VPN Router (all models)
End-of-Sale and End-of-Life Announcement for the Cisco RV082 Dual WAN
VPN Router
Customers who are running Cisco RV016, RV042, RV042G, and RV082 Routers are
encouraged to migrate to the Cisco Small Business RV340 Dual WAN Gigabit
VPN Router.
When considering a device migration, 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 new device will be
sufficient for their network needs, that new devices contain sufficient
memory, and that current hardware and software configurations will continue
to be supported properly by the new product. If the information is not
clear, customers are advised to contact the Cisco TAC or their contracted
maintenance providers.
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 vulnerabilities described
in this advisory.
Source
o Cisco would like to thank Kai Cheng from Institute of Information
Engineering, Chinese Academy of Sciences for reporting these
vulnerabilities.
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-rv-command-inject-BY4c5zd
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2021-FEB-03 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco Small Business RV Series Routers Management Interface Remote Command
Execution and Denial of Service Vulnerabilities
Priority: High
Advisory ID: cisco-sa-rv-overflow-ghZP68yj
First Published: 2021 February 3 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvv97027 CSCvv97031 CSCvv97034 CSCvv97035 CSCvv97036
CSCvv97037 CSCvv97038 CSCvv97040 CSCvv97041 CSCvv97042
CSCvv97043 CSCvv97044 CSCvv97046 CSCvv97047 CSCvv97048
CSCvv97049 CSCvv97050 CSCvv97051 CSCvv97052 CSCvv97053
CSCvv97054 CSCvv97056 CSCvv97057 CSCvv97058 CSCvv97059
CSCvv97060 CSCvv97061 CSCvv97062 CSCvv97063 CSCvv97064
CVE Names: CVE-2021-1319 CVE-2021-1320 CVE-2021-1321 CVE-2021-1322
CVE-2021-1323 CVE-2021-1324 CVE-2021-1325 CVE-2021-1326
CVE-2021-1327 CVE-2021-1328 CVE-2021-1329 CVE-2021-1330
CVE-2021-1331 CVE-2021-1332 CVE-2021-1333 CVE-2021-1334
CVE-2021-1335 CVE-2021-1336 CVE-2021-1337 CVE-2021-1338
CVE-2021-1339 CVE-2021-1340 CVE-2021-1341 CVE-2021-1342
CVE-2021-1343 CVE-2021-1344 CVE-2021-1345 CVE-2021-1346
CVE-2021-1347 CVE-2021-1348
CWEs: CWE-121
Summary
o Multiple vulnerabilities in the web-based management interface of Cisco
Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could
allow an authenticated, remote attacker to execute arbitrary code or cause
an affected device to restart unexpectedly.
These vulnerabilities are due to improper validation of user-supplied input
in the web-based management interface. An attacker could exploit these
vulnerabilities by sending crafted HTTP requests to an affected device. A
successful exploit could allow the attacker to execute arbitrary code as
the root user on the underlying operating system or cause the device to
reload, resulting in a denial of service (DoS) condition. To exploit these
vulnerabilities, an attacker would need to have valid administrator
credentials on the affected device.
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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-ghZP68yj
Affected Products
o Vulnerable Products
These vulnerabilities affect the following Cisco Small Business routers and
firmware releases:
Product Firmware Release
RV016 Multi-WAN VPN Routers 4.2.3.14 and earlier
RV042 Dual WAN VPN Routers 4.2.3.14 and earlier
RV042G Dual Gigabit WAN VPN Routers 4.2.3.14 and earlier
RV082 Dual WAN VPN Routers 4.2.3.14 and earlier
RV320 Dual Gigabit WAN VPN Routers 1.5.1.11 and earlier
RV325 Dual Gigabit WAN VPN Routers 1.5.1.11 and earlier
The web-based management interface of these devices is available through a
local LAN connection, which cannot be disabled, or through the WAN
connection if the remote management feature is enabled. By default, the
remote management feature is disabled for these devices.
Determine the Device Configuration
To determine whether the remote management feature is enabled for a device,
open the web-based management interface and choose Basic Settings > Remote
Management . If the Enable check box is checked, remote management is
enabled for the device.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by these vulnerabilities.
Workarounds
o There are no workarounds that address these vulnerabilities.
Fixed Software
o 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
Cisco fixed these vulnerabilities in Cisco RV320 and RV325 Dual Gigabit WAN
VPN Routers Firmware Release 1.5.1.13.
Cisco has not released and will not release firmware updates for the Cisco
RV016, RV042, RV042G, and RV082 Routers to address the vulnerabilities
described in this advisory. These products have entered the end-of-life
process. Customers are advised to refer to the end-of-life notices for
these products:
End-of-Sale and End-of-Life Announcement for the Cisco RV016 Multi-WAN
VPN Router
End-of-Sale and End-of-Life Announcement for the Cisco RV042 and RV042G
VPN Router (all models)
End-of-Sale and End-of-Life Announcement for the Cisco RV082 Dual WAN
VPN Router
Customers who are running Cisco RV016, RV042, RV042G, and RV082 Routers are
encouraged to migrate to the Cisco Small Business RV340 Dual WAN Gigabit
VPN Router.
When considering a device migration, 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 new device will be
sufficient for their network needs, that new devices contain sufficient
memory, and that current hardware and software configurations will continue
to be supported properly by the new product. If the information is not
clear, customers are advised to contact the Cisco TAC or their contracted
maintenance providers.
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 vulnerabilities described
in this advisory.
Source
o Cisco would like to thank Kai Cheng from Institute of Information
Engineering, Chinese Academy of Sciences for reporting these
vulnerabilities.
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-rv-overflow-ghZP68yj
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2021-FEB-03 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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