Gentoo Linux Security Advisory 201401-15 - Multiple vulnerabilities have been found in Asterisk, the worst of which may allow execution of arbitrary code. Versions less than 11.7.0 are affected.
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Debian Linux Security Advisory 2605-2 - The security update released in DSA 2605 for Asterisk, caused a regression that could lead to crashes. Updated packages have now been made available to correct that behavior.
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Debian Linux Security Advisory 2605-1 - Several vulnerabilities were discovered in Asterisk, a PBX and telephony toolkit, that allow remote attackers to perform denial of service attacks.
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Asterisk Project Security Advisory - Asterisk maintains an internal cache for devices. The device state cache holds the state of each device known to Asterisk, such that consumers of device state information can query for the last known state for a particular device, even if it is not part of an active call. The concept of a device in Asterisk can include things that do not have a physical representation. One way that this currently occurs is when anonymous calls are allowed in Asterisk. A device is automatically created and stored in the cache for each anonymous call that occurs; this is possible in the SIP and IAX2 channel drivers and through channel drivers that utilize the res_jabber/res_xmpp resource modules (Gtalk, Jingle, and Motif). Attackers exploiting this vulnerability can attack an Asterisk system configured to allow anonymous calls by varying the source of the anonymous call, continually adding devices to the device state cache and consuming a system's resources.
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