Debian Linux Security Advisory 1952-1 - Several vulnerabilities have been discovered in asterisk, an Open Source PBX and telephony toolkit.
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Gentoo Linux Security Advisory GLSA 200905-01 - Multiple vulnerabilities have been found in Asterisk allowing for Denial of Service and username disclosure.
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Asterisk Project Security Advisory - IAX2 provides a different response during authentication when a user does not exist, as compared to when the password is merely wrong. This allows an attacker to scan a host to find specific users on which to concentrate password cracking attempts.
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