Attacker Value
Very Low
(1 user assessed)
Exploitability
Very High
(1 user assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
2

CVE-2023-20073

Disclosure Date: February 02, 2023
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

A vulnerability in the web-based management interface of Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an unauthenticated, remote attacker to upload arbitrary files to an affected device. This vulnerability is due to insufficient authorization enforcement mechanisms in the context of file uploads. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to upload arbitrary files to the affected device.

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1
Ratings
Technical Analysis

An unauthorised File Upload (XSS) Vulnerability security flaw has been identified in the web-based management interface of Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers.

This vulnerability may permit an attacker, who is not authenticated and operates remotely, to upload any file of their choice to a compromised device. The root cause of this vulnerability lies in the inadequacy of authorization enforcement mechanisms related to file uploads.

To exploit this flaw, an attacker could dispatch a meticulously crafted HTTP request to a vulnerable device. A successful exploitation of this vulnerability could empower the attacker to upload unrestricted files to the compromised device.

Test script:

#!/usr/bin/bash
TARGET=”https://x.x.x.x”;
FILENAME=“login.html”;
<script>alert(‘XSS Test’)</script>” > \(FILENAME; \ curl -ksX POST "\)TARGET/api/operations/ciscosb-file:form-file-upload” -H “Authorization: 1” -F “pathparam=Portal” -F “fileparam=\({FILENAME}" -F "file.path=\){FILENAME}” -F “file=@${FILENAME};type=application/octet-stream”;

CVSS V3 Severity and Metrics
Base Score:
9.8 Critical
Impact Score:
5.9
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • cisco

Products

  • rv340 firmware,
  • rv340w firmware,
  • rv345 firmware,
  • rv345p firmware

References

Exploit
The following exploit POCs have not been verified by Rapid7 researchers, but are sourced from: nomi-sec/PoC-in-GitHub.
Additional sources will be added here as they become relevant.
Notes: We will only add the top 3 POCs for a given CVE. POCs added here must have at least 2 GitHub stars.

Additional Info

Technical Analysis