Command Execution Vulnerability in Cisco Small Business Routers
CVE-2023-20118

7.2HIGH

Key Information:

Vendor

Cisco
Status
Cisco Small Business Rv Series Router Firmware
Vendor
CVE Published:
13 April 2023

Badges

💰 Ransomware👾 Exploit Exists🦅 CISA Reported📰 News Worthy

What is CVE-2023-20118?

A vulnerability exists in the web-based management interface of several Cisco Small Business Routers that could allow an authenticated remote attacker to execute arbitrary commands. This flaw stems from improper validation of user input in HTTP packets. By sending a specially crafted HTTP request, an attacker with valid administrative credentials can potentially exploit this vulnerability to gain root-level access, compromising sensitive data and device functionality. Cisco will not release updates to rectify this issue, heightening the risk for users of these affected routers.

CISA has reported CVE-2023-20118

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2023-20118 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace as recent news articles suggest the vulnerability is being used by ransomware groups.

The CISA's recommendation is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Affected Version(s)

Cisco Small Business RV Series Router Firmware 1.0.1.17

Cisco Small Business RV Series Router Firmware 1.0.2.03

Cisco Small Business RV Series Router Firmware 1.1.0.09

News Articles

favicon imageThe Hacker News

ViciousTrap Uses Cisco Flaw to Build Global Honeypot from 5,300 Compromised Devices

ViciousTrap exploited CVE-2023-20118 to hijack 5,300 routers, building a honeypot-style spy network.

favicon imageThe Cyber Express

CISA Adds Five New Known Exploited Vulnerabilities To Catalog

CISA updates the Known Exploited Vulnerabilities Catalog with five critical flaws, including CVE-2023-20118, CVE-2022-43939, and CVE-2024-4885.

favicon imageThe Cyber Express

CISA Adds Five New Known Exploited Vulnerabilities To Catalog

CISA updates the Known Exploited Vulnerabilities Catalog with five critical flaws, including CVE-2023-20118, CVE-2022-43939, and CVE-2024-4885.

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 💰

    Used in Ransomware

  • 📰

    First article discovered by The Cyber Express

  • 🦅

    CISA Reported

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.