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 - The Asterisk maintainers have made it so that a scan for valid SIP usernames always returns with the same response.
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