CVE-2023-53961

4.3 MEDIUM

📋 TL;DR

This cross-site request forgery (CSRF) vulnerability in SOUND4 radio processing software allows attackers to trick authenticated administrators into performing unintended administrative actions. Attackers can craft malicious web pages that submit HTTP requests to the vulnerable interface when visited by logged-in users. All users of affected SOUND4 products with administrative access are at risk.

💻 Affected Systems

Products:
  • SOUND4 IMPACT
  • SOUND4 FIRST
  • SOUND4 PULSE
  • SOUND4 Eco
Versions: v2.x
Operating Systems: Not specified, likely embedded systems
Default Config Vulnerable: ⚠️ Yes
Notes: Requires administrative user to be logged into the web interface and visit a malicious page while authenticated.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise through administrative actions like changing configurations, disabling security controls, or executing arbitrary commands with admin privileges.

🟠

Likely Case

Unauthorized configuration changes, service disruption, or data manipulation through administrative functions triggered without user consent.

🟢

If Mitigated

Limited impact with proper CSRF protections, network segmentation, and administrative access controls in place.

🌐 Internet-Facing: MEDIUM
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploit requires social engineering to trick authenticated admin into visiting malicious page. Public exploit code available on Exploit-DB.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not specified

Vendor Advisory: https://web.archive.org/web/20221207074555/https://www.sound4.com/

Restart Required: No

Instructions:

No official patch available. Check vendor website for updates or security advisories.

🔧 Temporary Workarounds

Implement CSRF Tokens

all

Add anti-CSRF tokens to all administrative forms and validate them server-side.

Requires code modification to implement CSRF protection mechanisms

SameSite Cookie Attribute

all

Set SameSite=Strict or SameSite=Lax attributes on session cookies to prevent cross-site requests.

Set-Cookie: session=value; SameSite=Strict; Secure; HttpOnly

🧯 If You Can't Patch

  • Implement network segmentation to isolate SOUND4 systems from user workstations and internet access
  • Use separate browser profiles or dedicated machines for administrative access to SOUND4 systems

🔍 How to Verify

Check if Vulnerable:

Check if administrative forms lack CSRF tokens by inspecting form submissions and validating token presence.

Check Version:

Check web interface or system documentation for version information, typically displayed in admin panel.

Verify Fix Applied:

Verify that all administrative forms include and validate unique CSRF tokens with each request.

📡 Detection & Monitoring

Log Indicators:

  • Multiple administrative actions from same session in rapid succession
  • Administrative requests without referrer headers or with external referrers

Network Indicators:

  • HTTP POST requests to administrative endpoints with predictable parameters
  • Requests from unexpected sources to admin interfaces

SIEM Query:

source="sound4_logs" AND (action="admin_" OR uri="/admin/") | stats count by src_ip, user, action

🔗 References

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