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CVE-2024-53026: VoLTE/VoWiFi Information Disclosure Vulnerability

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Overview

The Common Vulnerability Exposure (CVE) archive has recently listed a new vulnerability, CVE-2024-53026, which poses significant risks to Voice over LTE (VoLTE) and Voice over WiFi (VoWiFi) users. This vulnerability allows unauthorized information disclosure when an invalid Real-Time Transport Control Protocol (RTCP) packet is received during an IP Multimedia Subsystem (IMS) call. It is a high-priority issue, as it could potentially lead to system compromise or data leakage. This blog post provides a detailed analysis of this vulnerability, its potential impacts, and the necessary steps to mitigate it.

Vulnerability Summary

CVE ID: CVE-2024-53026
Severity: High (CVSS 8.2)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Unauthorized information disclosure, potential system compromise or data leakage

Affected Products

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Product | Affected Versions

VoLTE | All prior to vendor patch
VoWiFi | All prior to vendor patch

How the Exploit Works

The vulnerability exploits a flaw in the way VoLTE and VoWiFi handle RTCP packets during an IMS call. Specifically, when an invalid RTCP packet is received, it triggers a fault in the system that discloses sensitive information. This information could potentially be used to compromise the system or leak data.
While the exact details of how this exploit works are beyond the scope of this blog post, it’s worth noting that it does not require any specific user interaction or privileges. This means that any system not patched against this vulnerability is potentially at risk.

Conceptual Example Code

Below is a
conceptual
example of a malicious RTCP packet that could potentially exploit this vulnerability:

POST /rtcp/packet HTTP/1.1
Host: target.example.com
Content-Type: application/x-rtcp
{
"header": {
"version": 2,
"padding": false,
"reportCount": 0,
"packetType": 200,
"length": 1
},
"payload": "malicious_payload"
}

This example shows a malformed RTCP packet with a malicious payload. When received by a vulnerable system, it could trigger the information disclosure vulnerability.

Mitigation

The most effective way to mitigate this vulnerability is to apply the most recent patch provided by your VoLTE or VoWiFi vendor. If a patch is not immediately available, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These solutions can monitor and filter out malicious RTCP packets, thereby reducing the risk of exploitation. However, these should be seen as temporary solutions, and a vendor patch should be applied as soon as available.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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