TippingPoint Zero Day Initiative

Multiple Sourcefire Products Static Web SSL Keys Vulnerability

ZDI-10-107: June 10th, 2010

CVSS Score

Affected Vendors

Affected Products

    3D Sensor 1000
    3D Sensor 2000
    3D Sensor 9900
    Defense Center 1000

Vulnerability Details

This vulnerability allows remote attackers to decrypt secure socket layer (SSL) communications directed to multiple Sourcefire products.

The specific flaw exists within the reuse of private SSL keys for multiple devices and installations. The keypair is stored in /etc/ssl/server.crt and /etc/ssl/server.key. Disclosure of the private key allows an attacker to decrypt and monitor SSL communications with the target.

Vendor Response

Sourcefire states:

Mitigation of this problem can be accomplished by replacing the static keys with custom keys. These instructions can be found in the installation guide for your product (available on the Sourcefire support site).


Disclosure Timeline

    2010-06-02 - Vulnerability reported to vendor
    2010-06-10 - Coordinated public release of advisory


This vulnerability was discovered by: