cbcvebase.
CVE-2024-20518
published 2024-10-02

CVE-2024-20518: A vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers could allow an authenticated…

PriorityP261critical9.1CVSS 3.1
AVNACLPRHUINSCCHIHAH
EPSS
0.61%
45.5th percentile
A vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers could allow an authenticated, Administrator-level, remote attacker to execute arbitrary code as the root user. To exploit this vulnerability, an attacker would need to have valid Administrator credentials on the affected device. This vulnerability is due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system as the root user.

Affected

196 ranges· showing 25
VendorProductVersion rangeFixed in
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware
ciscocisco_small_business_rv_series_router_firmware

Detection & IOCsextracted from sources · hover to see the quote

  • Exploit vector is crafted HTTP requests sent to the web-based management interface of affected Cisco Small Business routers (RV042, RV042G, RV320, RV325); monitor for anomalous or malformed HTTP requests targeting the management interface from authenticated administrator sessions.
  • Successful exploitation results in arbitrary code execution as root on the underlying OS; monitor for unexpected root-level process spawning originating from the web management daemon on affected devices.
  • Vulnerability is due to improper validation of user-supplied input (CWE-121/CWE-122 stack/heap buffer overflows) in the web-based management interface; focus detection on oversized or malformed input fields in HTTP POST/GET requests to the management interface.
  • Exploitation requires valid Administrator credentials; correlate with any prior credential compromise or brute-force activity against the management interface before RCE attempts.
  • ·Exploitation requires authenticated Administrator-level access; attack surface is limited to sessions with valid admin credentials, reducing risk from unauthenticated external attackers but not from insider threats or credential-compromised accounts.
  • ·The advisory groups multiple CVEs under the same advisory (cisco-sa-sb-rv04x_rv32x_vulns-yJ2OSDhV) with shared Bug ID CSCwm48770; detections should account for the broader vulnerability cluster affecting RV042, RV042G, RV320, and RV325 device families.

CVSS provenance

nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
vendor_cisco6.8MEDIUM
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