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AUSCERT External Security Bulletin Redistribution
ESB-2019.1535
Cisco Small Business RV320 and RV325 Routers Session
Hijacking Vulnerability
3 May 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Small Business RV320 and RV325 Routers
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-1724
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-sbr-hijack
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Cisco Small Business RV320 and RV325 Routers Session Hijacking Vulnerability
Priority: High
Advisory ID: cisco-sa-20190501-sbr-hijack
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvn77859CSCvn79158
CVE-2019-1724
CWE-287
CVSS Score:
8.8 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the session management functionality of the web-based
interface for Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN
Routers could allow an unauthenticated, remote attacker to hijack a valid
user session on an affected system. An attacker could use this impersonated
session to create a new user account or otherwise control the device with
the privileges of the hijacked session.
The vulnerability is due to a lack of proper session management controls.
An attacker could exploit this vulnerability by sending a crafted HTTP
request to a targeted device. A successful exploit could allow the attacker
to take control of an existing user session on the device. Exploitation of
the vulnerability requires that an authorized user session is active and
that the attacker can craft an HTTP request to impersonate that session.
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-20190501-sbr-hijack
Affected Products
o Vulnerable Products
This vulnerability affects Cisco Small Business RV320 and RV325 Dual
Gigabit WAN VPN Routers running Firmware Releases prior to 1.4.2.20.
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 fixed this vulnerability in RV320 and RV325 Dual Gigabit WAN VPN
Routers Firmware Releases 1.4.2.20 and later.
Customers can download the software from the Software Center on Cisco.com
by doing the following:
1. Click Browse all .
2. Choose Routers > Small Business Routers > Small Business RV Series
Routers > RV320 Dual Gigabit WAN VPN Router or RV325 Dual Gigabit WAN
VPN Router > Small Business Router Firmware .
3. Access releases by using the left pane of the RV320 Dual Gigabit WAN
VPN Router or RV325 Dual Gigabit WAN VPN Router page.
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 security researchers Xie Wei and Wu Linjie 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-20190501-sbr-hijack
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
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