VulnerabilityModified

CVE-2017-3882

CRITICAL 9.6EPSS 1.84%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability in the Universal Plug-and-Play (UPnP) implementation in the Cisco CVR100W Wireless-N VPN Router could allow an unauthenticated, Layer 2-adjacent attacker to execute arbitrary code or cause a denial of service (DoS) condition. The remote code execution could occur with root privileges. The vulnerability is due to incomplete range checks of the UPnP input data, which could result in a buffer overflow. An attacker could exploit this vulnerability by sending a malicious request to the UPnP listening port of the targeted device. An exploit could allow the attacker to cause the device to reload or potentially execute arbitrary code with root privileges. This vulnerability affects all firmware releases of the Cisco CVR100W Wireless-N VPN Router prior to Firmware Release 1.0.1.22. Cisco Bug IDs: CSCuz72642.

CVSS 3.0: 9.6 CRITICALCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS: 1.84% probability · 78th percentile
CISA KEV: Not listed
Weakness: CWE-119
Affected: cisco/small business rv router firmware · cisco/small business rv router firmware 1.0
Source: psirt@cisco.com

References

http://www.securityfocus.com/bid/98287Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038391
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170503-cvr100w1Vendor Advisory
http://www.securityfocus.com/bid/98287Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038391
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170503-cvr100w1Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.