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AUSCERT External Security Bulletin Redistribution
ESB-2021.0232
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote
Command Execution and Denial of Service Vulnerabilities
20 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Small Business Routers
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: None
CVE Names: CVE-2021-1360 CVE-2021-1307 CVE-2021-1217
CVE-2021-1216 CVE-2021-1215 CVE-2021-1214
CVE-2021-1213 CVE-2021-1212 CVE-2021-1211
CVE-2021-1210 CVE-2021-1209 CVE-2021-1208
CVE-2021-1207 CVE-2021-1206 CVE-2021-1205
CVE-2021-1204 CVE-2021-1203 CVE-2021-1202
CVE-2021-1201 CVE-2021-1200 CVE-2021-1199
CVE-2021-1198 CVE-2021-1197 CVE-2021-1196
CVE-2021-1195 CVE-2021-1194 CVE-2021-1193
CVE-2021-1192 CVE-2021-1191 CVE-2021-1190
CVE-2021-1189 CVE-2021-1188 CVE-2021-1187
CVE-2021-1186 CVE-2021-1185 CVE-2021-1184
CVE-2021-1183 CVE-2021-1182 CVE-2021-1181
CVE-2021-1180 CVE-2021-1179 CVE-2021-1178
CVE-2021-1177 CVE-2021-1176 CVE-2021-1175
CVE-2021-1174 CVE-2021-1173 CVE-2021-1172
CVE-2021-1171 CVE-2021-1170 CVE-2021-1169
CVE-2021-1168 CVE-2021-1167 CVE-2021-1166
CVE-2021-1165 CVE-2021-1164 CVE-2021-1163
CVE-2021-1162 CVE-2021-1161 CVE-2021-1160
CVE-2021-1159
Reference: ESB-2021.0142
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-WUnUgv4U
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Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote Command
Execution and Denial of Service Vulnerabilities
Critical
Advisory ID: cisco-sa-rv-overflow-WUnUgv4U
First Published: 2021 January 13 16:00 GMT
Last Updated: 2021 January 19 16:21 GMT
Version 2.0: Final
Workarounds: No workarounds available
Cisco Bug IDs:
CSCvv65098,CSCvv69398,CSCvv71463,CSCvv71466,CSCvv71467,CSCvv71468,CSCvv79107,
CSCvv79109,CSCvv79110,CSCvv96729,CSCvv96730,CSCvv96732,CSCvv96733,CSCvv96738,
CSCvv96741,CSCvv96742,CSCvv96747,CSCvv96748,CSCvv96751,CSCvv96755,CSCvv96756,
CSCvv96757,CSCvv96758,CSCvv96759,CSCvv96761,CSCvv96762,CSCvv96763,CSCvv96764,
CSCvv96765,CSCvv96767,CSCvv96768,CSCvv96771,CSCvv96772,CSCvv96799,CSCvv96800,
CSCvv96801,CSCvv96806,CSCvv96807,CSCvv96809,CSCvv96810,CSCvv96811,CSCvv96812,
CSCvv96814,CSCvv96817,CSCvv96818,CSCvv96820,CSCvw04678,CSCvw04779,CSCvw04781,
CSCvw06813,CSCvw06828,CSCvw06832,CSCvw06841,CSCvw06846,CSCvw06852,CSCvw06860,
CSCvw06865,CSCvw06868,CSCvw06873,CSCvw06874,CSCvw06879,CSCvw06880,CSCvw06882,
CSCvw06894,CSCvw06900,CSCvw06902,CSCvw06950,CSCvw06958,CSCvw06961,CSCvw06962,
CSCvw06967,CSCvw06971,CSCvw06978,CSCvw06981,CSCvw06982,CSCvw06987,CSCvw06991,
CSCvw06992,CSCvw06993,CSCvw06998,CSCvw07002,CSCvw10473,CSCvw10484,CSCvw10487,
CSCvw49030,CSCvw49034,CSCvw49036,CSCvw76488,CSCvw91642
CVSS Score: Base 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
CVE-2021-1159,CVE-2021-1160,CVE-2021-1161,CVE-2021-1162,CVE-2021-1163,CVE-2021-1164
CVE-2021-1165,CVE-2021-1166,CVE-2021-1167,CVE-2021-1168,CVE-2021-1169,CVE-2021-1170
CVE-2021-1171,CVE-2021-1172,CVE-2021-1173,CVE-2021-1174,CVE-2021-1175,CVE-2021-1176
CVE-2021-1177,CVE-2021-1178,CVE-2021-1179,CVE-2021-1180,CVE-2021-1181,CVE-2021-1182
CVE-2021-1183,CVE-2021-1184,CVE-2021-1185,CVE-2021-1186,CVE-2021-1187,CVE-2021-1188
CVE-2021-1189,CVE-2021-1190,CVE-2021-1191,CVE-2021-1192,CVE-2021-1193,CVE-2021-1194
CVE-2021-1195,CVE-2021-1196,CVE-2021-1197,CVE-2021-1198,CVE-2021-1199,CVE-2021-1200
CVE-2021-1201,CVE-2021-1202,CVE-2021-1203,CVE-2021-1204,CVE-2021-1205,CVE-2021-1206
CVE-2021-1207,CVE-2021-1208,CVE-2021-1209,CVE-2021-1210,CVE-2021-1211,CVE-2021-1212
CVE-2021-1213,CVE-2021-1214,CVE-2021-1215,CVE-2021-1216,CVE-2021-1217,CVE-2021-1307
CVE-2021-1360
CWE-121
Summary
o Multiple vulnerabilities in the Universal Plug and Play (UPnP) service and
the web-based management interface of Cisco Small Business RV110W, RV130,
RV130W, and RV215W Routers could allow a remote attacker to execute
arbitrary code or cause an affected device to restart unexpectedly.
For more information about these vulnerabilities, see the Details section
of this advisory.
Cisco has not 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-WUnUgv4U
Affected Products
o Vulnerable Products
These vulnerabilities affect the following Cisco Small Business routers:
? RV110W Wireless-N VPN Firewall
? RV130 VPN Router
? RV130W Wireless-N Multifunction VPN Router
? RV215W Wireless-N VPN Router
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 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.
Details
o 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.
Details about the vulnerabilities are as follows.
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers UPnP Remote
Command Execution and Denial of Service Vulnerability
A vulnerability in the Universal Plug and Play (UPnP) service of
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow
an unauthenticated, remote attacker to execute arbitrary code or cause an
affected device to restart unexpectedly.
The vulnerability is due to improper validation of incoming UPnP traffic.
An attacker could exploit this vulnerability by sending a crafted UPnP
request 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.
Cisco has not released software updates that address this vulnerability.
There are no workarounds that address this vulnerability.
Bug ID(s): CSCvv79107, CSCvv79109, and CSCvv79110
CVE ID: CVE-2021-1164
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
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management
Interface Remote Command Execution and Denial of Service Vulnerabilities
Multiple vulnerabilities in the web-based management interface of
Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow
an authenticated, remote attacker with valid administrator credentials to
execute arbitrary code or cause an affected device to restart unexpectedly.
The 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 not released software updates that address these vulnerabilities.
There are no workarounds that address these vulnerabilities.
Bug ID(s): CSCvv96742, CSCvv96741, CSCvv96738, CSCvv96733, CSCvv96732,
CSCvv96729, CSCvv96730, CSCvw10473, CSCvw10487, CSCvw10484, CSCvw04678,
CSCvw04779, CSCvw04781, CSCvv96765, CSCvv96767, CSCvv96764, CSCvv96756,
CSCvv96755, CSCvv96751, CSCvv96748, CSCvv96747, CSCvv96772, CSCvv96771,
CSCvv96768, CSCvv96763, CSCvv96762, CSCvv96761, CSCvv96757, CSCvv96820,
CSCvv96758, CSCvv96759, CSCvv96812, CSCvv96814, CSCvv96811, CSCvv96810,
CSCvv96809, CSCvv96806, CSCvv96799, CSCvv96800, CSCvv96801, CSCvv96807,
CSCvw06978, CSCvw06865, CSCvw06971, CSCvw06860, CSCvw06967, CSCvw06852,
CSCvw06962, CSCvw06846, CSCvw06841, CSCvw06961, CSCvw06832, CSCvw06958,
CSCvv96817, CSCvv96818, CSCvw06813, CSCvw06902, CSCvw06828, CSCvw06950,
CSCvv71466, CSCvv71463, CSCvv69398, CSCvw49030, CSCvw49036, CSCvw49034,
CSCvv71467, CSCvv71468, CSCvv65098, CSCvw07002, CSCvw06900, CSCvw06998,
CSCvw06894, CSCvw06993, CSCvw06882, CSCvw06868, CSCvw06981, CSCvw06873,
CSCvw06982, CSCvw06987, CSCvw06874, CSCvw06879, CSCvw06991, CSCvw06880,
CSCvw06992, CSCvw76488, and CSCvw91642
CVE ID(s): CVE-2021-1209, CVE-2021-1207, CVE-2021-1167, CVE-2021-1208,
CVE-2021-1360, CVE-2021-1168, CVE-2021-1204, CVE-2021-1173, CVE-2021-1187,
CVE-2021-1161, CVE-2021-1198, CVE-2021-1182, CVE-2021-1211, CVE-2021-1163,
CVE-2021-1171, CVE-2021-1188, CVE-2021-1189, CVE-2021-1159, CVE-2021-1192,
CVE-2021-1184, CVE-2021-1216, CVE-2021-1177, CVE-2021-1210, CVE-2021-1170,
CVE-2021-1174, CVE-2021-1200, CVE-2021-1195, CVE-2021-1215, CVE-2021-1205,
CVE-2021-1201, CVE-2021-1196, CVE-2021-1175, CVE-2021-1179, CVE-2021-1191,
CVE-2021-1169, CVE-2021-1307, CVE-2021-1212, CVE-2021-1180, CVE-2021-1190,
CVE-2021-1185, CVE-2021-1176, CVE-2021-1172, CVE-2021-1183, CVE-2021-1166,
CVE-2021-1194, CVE-2021-1203, CVE-2021-1206, CVE-2021-1178, CVE-2021-1214,
CVE-2021-1217, CVE-2021-1186, CVE-2021-1165, CVE-2021-1197, CVE-2021-1160,
CVE-2021-1181, CVE-2021-1162, CVE-2021-1199, CVE-2021-1213, CVE-2021-1193,
and CVE-2021-1202
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
o There are no workarounds that address these vulnerabilities.
Fixed Software
o Cisco has not released and will not release software updates to address the
vulnerabilities described in this advisory. The Cisco Small Business
RV110W, RV130, RV130W, and RV215W Routers 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 Small Business RV
Series Routers (selected models)
Customers are encouraged to migrate to the Cisco Small Business RV132W,
RV160, or RV160W Routers.
When considering a device migration, 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 new device will be sufficient
for their network needs; new devices contain sufficient memory, and 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 Technical Assistance Center (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 the following people for reporting these
vulnerabilities:
? ADLab of Venustech: CVE-2021-1168, CVE-2021-1197, CVE-2021-1198,
CVE-2021-1199, CVE-2021-1200, CVE-2021-1201, CVE-2021-1202,
CVE-2021-1205, CVE-2021-1206, CVE-2021-1210, CVE-2021-1211,
CVE-2021-1212, CVE-2021-1213, CVE-2021-1214, CVE-2021-1215,
CVE-2021-1216, and CVE-2021-1217
? Kai Cheng of the Institute of Information Engineering, Chinese Academy
of Sciences: CVE-2021-1159, CVE-2021-1160, CVE-2021-1161,
CVE-2021-1162, CVE-2021-1163, CVE-2021-1165, CVE-2021-1166,
CVE-2021-1169, CVE-2021-1170, CVE-2021-1171, CVE-2021-1172,
CVE-2021-1173, CVE-2021-1174, CVE-2021-1175, CVE-2021-1176,
CVE-2021-1177, CVE-2021-1178, CVE-2021-1179, CVE-2021-1180,
CVE-2021-1181, CVE-2021-1182, CVE-2021-1183, CVE-2021-1184,
CVE-2021-1185, CVE-2021-1186, CVE-2021-1187, CVE-2021-1188,
CVE-2021-1189, CVE-2021-1190, CVE-2021-1191, CVE-2021-1192,
CVE-2021-1193, CVE-2021-1194, CVE-2021-1195, CVE-2021-1196,
CVE-2021-1203, and CVE-2021-1204
? Shizhi He of Wuhan University: CVE-2021-1167 and CVE-2021-1208
? Simp1e of 1AQ Team: CVE-2021-1207, CVE-2021-1209, and CVE-2021-1307
? Swings of Chaitin Security Research Lab: CVE-2021-1207, CVE-2021-1209,
CVE-2021-1164, and CVE-2021-1307
? Treck Zhou and Ares. Pan: CVE-2021-1164 and CVE-2021-1360
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-WUnUgv4U
Revision History
o
+---------+-----------------------------+--------------+--------+-------------+
| Version | Description | Section | Status | Date |
+---------+-----------------------------+--------------+--------+-------------+
| | Changed advisory SIR from | Title, | | |
| | High to Critical. Updated | Header (SIR | | |
| | the advisory title. Added a | and CVSS | | |
| 2.0 | Details section. Changed | score), | Final | 2021-JAN-19 |
| | the description and updated | Summary, and | | |
| | the CVSS score and SIR for | Details | | |
| | CVE-2021-1164. | | | |
+---------+-----------------------------+--------------+--------+-------------+
| 1.1 | Updated external researcher | Source | Final | 2021-JAN-14 |
| | information. | | | |
+---------+-----------------------------+--------------+--------+-------------+
| 1.0 | Initial public release. | -- | Final | 2021-JAN-13 |
+---------+-----------------------------+--------------+--------+-------------+
- --------------------------END INCLUDED TEXT--------------------
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