Title: Loom Software SurfNow Remote HTTP GET Request Denial Of Service Vulnerability
Severity: HIGH
Description:
SurfNOW is a commercially-available proxy software package designed to obscure identity and protect privacy on the Internet. It is available for the Microsoft Windows platform.
A problem has been identified in the handling of specific types of requests by SurfNOW. Upon receiving specially crafted requests, it is possible for a remote attacker to crash a vulnerable implementation, denying service to the user.
The problem is in the handling of excessive data in HTTP header fields. An attacker with access to the proxy server can potentially submit a request of excessive length, causing the server to become unstable. It has been reported that this can reliably produce a crash in the proxy server after multiple such requests are submitted. The attacker must reportedly send HTTP GET requests that are 490k in length to reproduce this issue.
This issue may be indicative of a boundary condition error. This information, however, is conjecture based on reports by the researcher. If this information does prove to be true, it may likely be possible to exploit this condition to execute code with the privileges of the proxy server process.
Affected Products:
- Loom Software SurfNOW Professional 1.2.0
- Loom Software SurfNOW Professional 1.4.0
- Loom Software SurfNOW Professional 1.5.0
- Loom Software SurfNOW Professional 1.6.0
- Loom Software SurfNOW Professional 2.0.0
- Loom Software SurfNOW Professional 2.1.0
- Loom Software SurfNOW Professional 2.2.0
- Loom Software SurfNOW Standart 1.2.0
- Loom Software SurfNOW Standart 1.4.0
- Loom Software SurfNOW Standart 1.5.0
- Loom Software SurfNOW Standart 1.6.0
- Loom Software SurfNOW Standart 2.0.0
- Loom Software SurfNOW Standart 2.1.0
- Loom Software SurfNOW Standart 2.2.0
References:
- Loom Software: Company Homepage
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