ISS Finds Security Vulnerabilities

ISS Finds Security Vulnerabilities
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ISS Finds Security Vulnerabilities

2006:11:07 13-57-42
ISS Finds Security Vulnerabilities in Asterisk

Internet Security Systems (ISS) has identified two security vulnerabilities within Inter-Asterisk eXchange 2 (IAX2), a part of the Asterisk PBX that exchanges VoIP and call content.

The first security flaw is associated with the ability of an attacker to flood the phone service with call requests, creating a DoS situation whereby the phone service would be prevented from handling new calls. Asterisk has already released a patch that addresses this vulnerability.

The second vulnerability allows an attacker to access accounts without passwords and to flood another network with large amounts of traffic. Users can eliminate this flaw by assigning passwords to all accounts.

ISS markets a security product known as Proventia that prevents the aforementioned flaws as well as other security issues related to Asterisk.

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