CVE-2020-37065

9.8 CRITICAL

📋 TL;DR

CVE-2020-37065 is a critical buffer overflow vulnerability in StreamRipper32 version 2.6 that allows attackers to execute arbitrary code by sending maliciously crafted SongPattern inputs exceeding 256 bytes. This affects all users running the vulnerable version of StreamRipper32, potentially leading to complete system compromise.

💻 Affected Systems

Products:
  • StreamRipper32
Versions: Version 2.6 specifically
Operating Systems: Windows, Linux
Default Config Vulnerable: ⚠️ Yes
Notes: All installations of version 2.6 are vulnerable regardless of configuration.

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to full system compromise, data theft, and persistent backdoor installation.

🟠

Likely Case

Application crash and denial of service, with potential for limited code execution in constrained environments.

🟢

If Mitigated

Application crash without code execution if exploit fails or protections like DEP/ASLR are effective.

🌐 Internet-Facing: HIGH - Attackers can exploit remotely if the application processes external stream data.
🏢 Internal Only: MEDIUM - Requires internal network access or user interaction with malicious content.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploit code is publicly available on Exploit-DB, making attacks straightforward for attackers.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not available

Vendor Advisory: http://streamripper.sourceforge.net/

Restart Required: No

Instructions:

No official patch exists. Upgrade to a different version or discontinue use of StreamRipper32.

🔧 Temporary Workarounds

Input Validation Filter

all

Implement input validation to reject SongPattern inputs exceeding 256 bytes.

Not applicable - requires code modification

Network Segmentation

all

Isolate StreamRipper32 systems from untrusted networks.

firewall rules to restrict inbound connections

🧯 If You Can't Patch

  • Discontinue use of StreamRipper32 version 2.6 entirely
  • Implement strict network controls and monitor for exploitation attempts

🔍 How to Verify

Check if Vulnerable:

Check if StreamRipper32 version 2.6 is installed on the system.

Check Version:

On Windows: Check program properties or installation directory. On Linux: Check package manager or run 'streamripper --version' if available.

Verify Fix Applied:

Verify that StreamRipper32 version 2.6 has been removed or replaced.

📡 Detection & Monitoring

Log Indicators:

  • Application crashes with memory access violations
  • Unusual process creation from StreamRipper32

Network Indicators:

  • Unusual network traffic to/from StreamRipper32 port
  • Malformed stream data patterns

SIEM Query:

Process creation where parent process is StreamRipper32 AND command line contains unusual patterns

🔗 References

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