Overview
The CVE-2025-21427 vulnerability represents a significant threat to data privacy and system integrity. It allows for information disclosure during the decoding of RTP (Real-Time Transport Protocol) packet payload when the User Equipment (UE) receives an RTP packet from the network. This vulnerability can lead to potential system compromise or data leakage, affecting any system or network reliant on the secure transmission of RTP data packets. Given the widespread use of RTP in real-time applications, such as audio and video streaming, understanding and mitigating this vulnerability is of utmost importance.
Vulnerability Summary
CVE ID: CVE-2025-21427
Severity: High (CVSS Score: 8.2)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
[Insert product] | [Insert affected version]
[Insert product] | [Insert affected version]
How the Exploit Works
The exploit takes advantage of a flaw in the decoding process of RTP packet payload. When a UE receives an RTP packet from the network, it decodes the packet payload. However, due to the vulnerability, the decoding process fails to properly handle certain data, leading to an unauthorized disclosure of information. This information can potentially be leveraged by an attacker to compromise the system or leak sensitive data.
Conceptual Example Code
Below is a conceptual example of a malformed RTP packet that could potentially exploit this vulnerability. Please note that this is a hypothetical scenario intended for illustration purposes only.
POST /rtp/packet/decode HTTP/1.1
Host: target.example.com
Content-Type: application/rtp
{
"RTP_Packet": "malformed_packet_data..."
}Mitigation
The primary mitigation for this vulnerability is to apply the vendor patch as soon as it becomes available. In the event that the vendor patch is not immediately available or applicable, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy. They can be configured to monitor and block suspicious RTP packets, reducing the risk of exploitation. However, these measures are not a substitute for patching the vulnerability at the source and should only be considered as interim solutions.