9.8
CRITICAL
CVE-2021-1473
Cisco Small Business RV Series Router Command Injection
Description

Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

INFO

Published Date :

April 8, 2021, 4:15 a.m.

Last Modified :

Nov. 7, 2023, 3:28 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-1473 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-1473 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco rv340_firmware
2 Cisco rv340w_firmware
3 Cisco rv345_firmware
4 Cisco rv345p_firmware
5 Cisco small_business_rv_series_router_firmware
: Total Affected Vendor : 1 | Products : 5
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-1473.

URL Resource
http://packetstormsecurity.com/files/162238/Cisco-RV-Authentication-Bypass-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2021/Apr/39 Mailing List Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-bypass-inject-Rbhgvfdx Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
HimmelAward/Goby_POC

在公网收集的gobypoc+部分自己加的poc

Updated: 1 week, 6 days ago
96 stars 5 fork 5 watcher
Born at : July 28, 2023, 4:28 p.m. This repo has been linked 296 different CVEs too.
Profile Photo
20142995/Goby

None

Python

Updated: 1 week, 4 days ago
565 stars 135 fork 135 watcher
Born at : Nov. 25, 2022, 5:20 a.m. This repo has been linked 174 different CVEs too.
Profile Photo
Sohrabian/special-cyber-security-topic

with this cyber security topics you can level up your knowledge for more influnce ( out of the box ) - include every you thinking, it can be developed at any time. it's helpful for "syber security operation center", "penetration tester", " Red Teaming", "Blue Teaming" . Is included fundamental

Updated: 6 months ago
3 stars 0 fork 0 watcher
Born at : Feb. 1, 2022, 6:10 a.m. This repo has been linked 3 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-1473 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-1473 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Removed CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
    Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
  • Reanalysis by [email protected]

    Aug. 05, 2022

    Action Type Old Value New Value
    Added CWE NIST CWE-78
  • Modified Analysis by [email protected]

    Apr. 23, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/162238/Cisco-RV-Authentication-Bypass-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/162238/Cisco-RV-Authentication-Bypass-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://seclists.org/fulldisclosure/2021/Apr/39 No Types Assigned http://seclists.org/fulldisclosure/2021/Apr/39 Mailing List, Third Party Advisory
  • CVE Modified by [email protected]

    Apr. 20, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/162238/Cisco-RV-Authentication-Bypass-Code-Execution.html [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 20, 2021

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2021/Apr/39 [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 19, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-bypass-inject-Rbhgvfdx No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-bypass-inject-Rbhgvfdx Vendor Advisory
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:rv340_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.03.21 OR cpe:2.3:h:cisco:rv340:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:rv340w_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.03.21 OR cpe:2.3:h:cisco:rv340w:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:rv345_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.03.21 OR cpe:2.3:h:cisco:rv345:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:rv345p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.03.21 OR cpe:2.3:h:cisco:rv345p:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 08, 2021

    Action Type Old Value New Value
    Changed Description Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-1473 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-1473 weaknesses.

CAPEC-6: Argument Injection Argument Injection CAPEC-15: Command Delimiters Command Delimiters CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-88: OS Command Injection OS Command Injection CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

72.22 }} 0.42%

score

0.98125

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: