Instance Evaluation Mismanagement in Distributed Ruby 1.8 by DRuby
CVE-2011-5331

9.8CRITICAL

Key Information:

Vendor

Distributed Ruby Project

Status
Distributed Ruby
Vendor
CVE Published:
18 November 2019

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2011-5331?

The Distributed Ruby (DRuby) implementation in version 1.8 has a security flaw that occurs due to mishandling of instance_eval, allowing potential attackers to exploit this vulnerability. This oversight could lead to unauthorized code execution, making it imperative for users to be aware of the implications and seek remediation.

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-2011-5331 - Proof of Concept

CVE-2011-5331
Created by tomquinn8

References

https://www.exploit-db.com/exploits/17058
x_refsource_MISC

EPSS Score

5% 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

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.