PT-2022-3950 · Cisco · Cisco Small Business Rv130W Wireless-N Multifunction Vpn Router+3

Chuan Qin + 2 · Published 2022-07-20 · Updated 2022-07-26 · CVE-2022-20912

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco Small Business RV110W Wireless-N VPN Firewall versions not specified Cisco Small Business RV130 Series VPN Router versions not specified Cisco Small Business RV130W Wireless-N Multifunction VPN Router versions not specified Cisco Small Business RV215W Wireless-N VPN Router versions not specified

Description The vulnerability is related to insufficient validation of user fields within incoming HTTP packets in the web-based management interface of the affected devices. This could allow an authenticated, remote attacker to execute arbitrary commands on an affected device or cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. An attacker would need to have valid Administrator credentials on the affected device to exploit this issue.

Recommendations For Cisco Small Business RV110W Wireless-N VPN Firewall, restrict access to the web-based management interface until a fix is available. For Cisco Small Business RV130 Series VPN Router, restrict access to the web-based management interface until a fix is available. For Cisco Small Business RV130W Wireless-N Multifunction VPN Router, restrict access to the web-based management interface until a fix is available. For Cisco Small Business RV215W Wireless-N VPN Router, restrict access to the web-based management interface until a fix is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

OS Command Injection

Buffer Overflow

Weakness Enumeration

CWE-78

CWE-120

Related Identifiers

BDU:2022-04780

CVE-2022-20912

Affected Products

Cisco Small Business Rv110W Wireless-N Vpn Firewall

Cisco Small Business Rv130 Series Vpn Router

Cisco Small Business Rv130W Wireless-N Multifunction Vpn Router

Cisco Small Business Rv215W Wireless-N Vpn Router

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-rce-overflow-ygHByAK · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-20912 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-20912 · Security Note
• https://bdu.fstec.ru/vul/2022-04780 · Security Note
• https://t.me/cvenotify/33559 · Telegram Post