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Files from Matt Jordan

Email addressmjordan at digium.com
First Active2012-03-16
Last Active2014-10-21
Asterisk Project Security Advisory - AST-2014-011
Posted Oct 21, 2014
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - Asterisk suffered from the SSL POODLE vulnerability.

tags | advisory
advisories | CVE-2014-3566
MD5 | a170a03fa9b649c31b8476187a9185fb
Asterisk Project Security Advisory - AST-2014-010
Posted Sep 18, 2014
Authored by Matt Jordan, Philippe Lindheimer | Site asterisk.org

Asterisk Project Security Advisory - When an out of call message - delivered by either the SIP or PJSIP channel driver or the XMPP stack - is handled in Asterisk, a crash can occur if the channel servicing the message is sent into the ReceiveFax dialplan application while using the res_fax_spandsp module. Note that this crash does not occur when using the res_fax_digium module. While this crash technically occurs due to a configuration issue, as attempting to receive a fax from a channel driver that only contains textual information will never succeed, the likelihood of having it occur is sufficiently high as to warrant this advisory.

tags | advisory
MD5 | 1bf9a3407b5481e77edf775e3ccb0912
Asterisk Project Security Advisory - AST-2014-004
Posted Mar 11, 2014
Authored by Mark Michelson, Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - A remotely exploitable crash vulnerability exists in the PJSIP channel driver's handling of SUBSCRIBE requests. If a SUBSCRIBE request is received for the presence Event, and that request has no Accept headers, Asterisk will attempt to access an invalid pointer to the header location. Note that this issue was fixed during a re-architecture of the res_pjsip_pubsub module in Asterisk 12.1.0. As such, this issue has already been resolved in a released version of Asterisk. This notification is being released for users of Asterisk 12.0.0.

tags | advisory
advisories | CVE-2014-2289
MD5 | f9984c9c3245f1133638fada061a2940
Asterisk Project Security Advisory - AST-2013-005
Posted Aug 28, 2013
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - A remotely exploitable crash vulnerability exists in the SIP channel driver if an invalid SDP is sent in a SIP request that defines media descriptions before connection information. The handling code incorrectly attempts to reference the socket address information even though that information has not yet been set.

tags | advisory
MD5 | b715f9c2eaad10cad18835c40db97b9c
Asterisk Project Security Advisory - AST-2012-015
Posted Jan 3, 2013
Authored by Matt Jordan | Site asterisk.org

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.

tags | advisory
advisories | CVE-2012-5977
MD5 | 1f0cefcdb9afc401724361ca6f691932
Asterisk Project Security Advisory - AST-2012-013
Posted Aug 30, 2012
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - When an IAX2 call is made using the credentials of a peer defined in a dynamic Asterisk Realtime Architecture (ARA) backend, the ACL rules for that peer are not applied to the call attempt. This allows for a remote attacker who is aware of a peer's credentials to bypass the ACL rules set for that peer.

tags | advisory, remote
advisories | CVE-2012-4737
MD5 | 91ab0e96a7351e26f182f8fba5823d97
Asterisk Project Security Advisory - AST-2012-012
Posted Aug 30, 2012
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - The AMI Originate action can allow a remote user to specify information that can be used to execute shell commands on the system hosting Asterisk. This can result in an unwanted escalation of permissions, as the Originate action, which requires the "originate" class authorization, can be used to perform actions that would typically require the "system" class authorization.

tags | advisory, remote, shell
advisories | CVE-2012-2186
MD5 | b23f7089de8bc593b53468fabf54bc9b
Asterisk Project Security Advisory - AST-2012-009
Posted Jun 14, 2012
Authored by Matt Jordan, Christoph Hebeisen | Site asterisk.org

Asterisk Project Security Advisory - AST-2012-008 previously dealt with a denial of service attack exploitable in the Skinny channel driver that occurred when certain messages are sent after a previously registered station sends an Off Hook message. Unresolved in that patch is an issue in the Asterisk 10 releases, wherein, if a Station Key Pad Button Message is processed after an Off Hook message, the channel driver will inappropriately dereference a Null pointer. Similar to AST-2012-008, a remote attacker with a valid SCCP ID can can use this vulnerability by closing a connection to the Asterisk server when a station is in the "Off Hook" call state and crash the server.

tags | advisory, remote, denial of service
advisories | CVE-2012-3553
MD5 | 0559bf1eaeb33a2104fd097035bfaeb6
Asterisk Project Security Advisory - AST-2012-008
Posted May 29, 2012
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - A Null-pointer dereference has been identified in the SCCP (Skinny) channel driver of Asterisk. When an SCCP client closes its connection to the server, a pointer in a structure is set to Null. If the client was not in the on-hook state at the time the connection was closed, this pointer is later dereferenced. A remote attacker with a valid SCCP ID can can use this vulnerability by closing a connection to the Asterisk server in certain call states (e.g. "Off hook") to crash the server. Successful exploitation of this vulnerability would result in termination of the server, causing denial of service to legitimate users.

tags | advisory, remote, denial of service
advisories | CVE-2012-2948
MD5 | e5bbb9c38534065f766274d2c055497d
Asterisk Project Security Advisory - AST-2012-006
Posted Apr 23, 2012
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - A remotely exploitable crash vulnerability exists in the SIP channel driver if a SIP UPDATE request is processed within a particular window of time.

tags | advisory
MD5 | 32e74fe214613d789749549a4bf27817
Asterisk Project Security Advisory - AST-2012-005
Posted Apr 23, 2012
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - In the Skinny channel driver, KEYPAD_BUTTON_MESSAGE events are queued for processing in a buffer allocated on the heap, where each DTMF value that is received is placed on the end of the buffer. Since the length of the buffer is never checked, an attacker could send sufficient KEYPAD_BUTTON_MESSAGE events such that the buffer is overrun.

tags | advisory, overflow
MD5 | 696a9c6849da6138ccfe67440c3caec9
Asterisk Project Security Advisory - AST-2012-003
Posted Mar 16, 2012
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - An attacker attempting to connect to an HTTP session of the Asterisk Manager Interface can send an arbitrarily long string value for HTTP Digest Authentication. This causes a stack buffer overflow, with the possibility of remote code injection.

tags | advisory, remote, web, overflow
MD5 | 397821839758278f437c9b144d3db54f
Asterisk Project Security Advisory - AST-2012-002
Posted Mar 16, 2012
Authored by Matt Jordan | Site asterisk.org

Asterisk Project Security Advisory - Asterisk suffers from an exploitable stack buffer overflow with locally defined data.

tags | advisory, overflow
MD5 | 390b1d4b0c1913fcbd9dff825bf15166
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