2021-34730 | Cisco RV110W/RV130/RV130W/RV215W UPnP Request stack-based overflow (cisco-sa-cisco-sb-rv-overflow-htpymMB5)
|CVSS Meta Temp Score||Current Exploit Price (≈)||CTI Interest Score|
A vulnerability classified as very critical was found in Cisco RV110W, RV130, RV130W and RV215W (Router Operating System) (affected version unknown). Affected by this vulnerability is some unknown processing of the component UPnP Request Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-121. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
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, resulting in a denial of service (DoS) condition. This 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 DoS condition. Cisco has not released software updates that address this vulnerability.
The weakness was disclosed 08/19/2021 as cisco-sa-cisco-sb-rv-overflow-htpymMB5. The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2021-34730 since 06/15/2021. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn’t need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/21/2021).
Upgrading eliminates this vulnerability.
VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4
Status: Not defined
0-Day Time: 🔒
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