Overview
The Common Vulnerabilities and Exposures (CVE) system has identified a significant security flaw denoted as CVE-2025-35966. This vulnerability exists in the Bloomberg Comdb2 8.1 and poses a serious threat to any system using this version. The flaw can be exploited to carry out a Denial of Service (DoS) attack, leading to potential system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-35966
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Bloomberg Comdb2 | 8.1
How the Exploit Works
The exploit takes advantage of a null pointer dereference vulnerability in the CDB2SQLQUERY protocol buffer message handling of Bloomberg Comdb2 8.1. By crafting a specific protocol buffer message, the attacker can cause a denial of service. The attacker just needs to connect to a database instance over TCP and send the crafted message. This can lead to a system crash or even potential data leakage if not properly mitigated.
Conceptual Example Code
Here is a conceptual example of how an attacker could possibly exploit this vulnerability:
CONNECT 192.168.1.10:8080 TCP
SEND {
"protocol_message": {
"cdb2sqlquery": {
"query": "null"
}
}
}In this example, the attacker connects to the target’s database instance over TCP and sends a specially crafted message containing a null query. This message would trigger the null pointer dereference vulnerability and cause a denial of service.