Remote code execution in Cisco Small Business RV110W, RV130, RV130W, and RV215W routers

1) Stack-based buffer overflow

EUVDB-ID: #VU64422

Risk: Critical

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]

CVE-ID: CVE-2022-20825

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTTP packets. A remote unauthenticated attacker can send specially crafted HTTP packets to the web-based management interface, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

RV110W Wireless-N VPN Firewall: All versions

Cisco Small Business RV130 Series VPN Routers: All versions

RV130W Wireless-N Multifunction VPN Router: All versions

RV215W Wireless-N VPN Router: All versions

CPE2.3

• cpe:2.3:h:cisco_systems:rv110w_wireless-n_vpn_firewall:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_small_business_rv130_series_vpn_routers:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:rv130w_wireless-n_multifunction_vpn_router:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:rv215w_wireless-n_vpn_router:*:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-overflow-s2r82P9v
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb95832
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb95833
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb95829

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.