Secunia Security Advisory – ZwelL has discovered some vulnerabilities in eStara SoftPhone, which can be exploited by malicious people to cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/43887/sa18872.txt
Source: https://packetstormsecurity.com/files/43887/Secunia-Security-Advisory-18872.html