Command Injection Vulnerability in Cisco IOS XE Software Web UI
CVE-2023-20273

7.2HIGH

Key Information:

Vendor
Cisco
Status
Cisco iOS Xe Software
Vendor
CVE Published:
25 October 2023

Badges

👾 Exploit Exists🟡 Public PoC🦅 CISA Reported📰 News Worthy

Summary

A command injection vulnerability exists in the web UI of Cisco IOS XE Software, allowing an authenticated remote attacker to inject commands with root privileges. This vulnerability arises from insufficient input validation, which could enable an attacker to send specially crafted input to the web UI. Successful exploitation may allow the attacker to execute arbitrary commands on the underlying operating system, posing serious risks to system integrity and confidentiality.

CISA Reported

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 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Verify that instances of Cisco IOS XE Web UI are in compliance with BOD 23-02 and apply mitigations per vendor instructions. For affected products (Cisco IOS XE Web UI exposed to the internet or to untrusted networks), follow vendor instructions to determine if a system may have been compromised and immediately report positive findings to CISA.

Affected Version(s)

Cisco IOS XE Software 16.1.1

Cisco IOS XE Software 16.1.2

Cisco IOS XE Software 16.1.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-20273
Created by smokeintheshell

News Articles

favicon imageCSO Online

Cisco patches IOS XE vulnerabilities actively being exploited

CVE-2023-20198 and CVE-2023-20273 affect Cisco IOS XE software if the web UI feature is enabled.

1 year ago

favicon imageBleepingComputer

Cisco patches IOS XE zero-days used to hack over 50,000 devices

Cisco has addressed the two vulnerabilities (CVE-2023-20198 and CVE-2023-20273) that hackers exploited to compromise tens of thousands of IOS XE devices over the past week.

1 year ago

favicon imageThe Hacker News

Cisco Zero-Day Exploited to Implant Malicious Lua Backdoor on Thousands of Devices

🚨 Cisco issued an alert about a new zero-day vulnerability in IOS XE (CVE-2023-20273). Attackers are actively exploiting it to install malware.

1 year ago

References

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

EPSS Score

7% chance of being exploited in the next 30 days.

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

  • 🟡

    Public PoC available

  • Vulnerability published

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • 📰

    First article discovered by The Hacker News

  • Vulnerability Reserved

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