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Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers SSL Remote Code Execution and Denial of Service Vulnerability

cisco-sa-sb-rce-dos-9ZAjkx4 · High · Published · Updated

A vulnerability in the Secure Sockets Layer (SSL) VPN feature of Cisco Small Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device or cause the device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because HTTP requests are not properly validated. An attacker could exploit this vulnerability by sending a crafted HTTP request over an SSL connection to an affected device. A successful exploit could allow the attacker to remotely execute arbitrary code on the device or cause the device to reload, resulting in a DoS condition. 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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rce-dos-9ZAjkx4

Cisco advisory · CSAF JSON

Workarounds

There are no workarounds that address this vulnerability. However, disabling the SSL VPN eliminates the attack vector for this vulnerable and maybe a suitable mitigation until the affected device can be upgraded. To disable the SSL VPN, administrators can use the web-based utility, choose VPN > SSL VPN, and set the radio button to Off.

CVEsCVE-2020-3357
Cisco Bug IDsCSCvu36543
CVSS ScoreBase 9.8
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
Product Names From Source
Cisco Small Business RV Series Router Firmware

Related Products

Product CVE Evidence
Cisco Small Business RV Series Router Firmware CVE-2020-3357 Cisco OpenVuln