Arbitrary Code Execution Vulnerability in OpenCATS by OpenCATS
CVE-2021-41560

9.8CRITICAL

Key Information:

Vendor

Opencats

Status
Opencats
Vendor
CVE Published:
15 December 2021

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 46%

What is CVE-2021-41560?

The OpenCATS application, up to version 0.9.6, suffers from a security flaw that enables remote attackers to execute arbitrary code. This vulnerability arises from improperly handled file uploads via the lib/FileUtility.php component, allowing the uploading of malicious executable files. By exploiting this flaw, an attacker can gain unauthorized access or control over the affected system, emphasizing the need for prompt remediation and secure coding practices.

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.

RevCAT
Created by Nickguitar

References

https://youtu.be/isiDISag7CM
x_refsource_MISC
https://github.com/opencats/OpenCATS/commit/b1af3bde1f68b...
x_refsource_CONFIRM
https://github.com/Nickguitar/RevCAT
x_refsource_MISC

EPSS Score

46% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

.