Digium Asterisk PJSIP Stack ACK Denial of Service

A denial of service vulnerability exists in Digium Asterisk when the PJSIP stack is used. The vulnerability is due to improper processing of ACKs from an unrecognized endpoint, that causes a NULL pointer dereference. A remote unauthenticated attacker can exploit this vulnerability by sending an A...

Asterisk 13.10.x < 13.11.1 ACK Handling Unrecognized Username NULL Pointer Dereference DoS (AST-2016-006)

According to its SIP banner, the version of Asterisk running on the remote host is 13.10.x prior to 13.11.1. It is, therefore, affected by a NULL pointer dereference flaw due to improper handling of ACK packets from an unknown username. An unauthenticated, remote attacker can exploit this to cras...

Asterisk Remote Crash Vulnerability (AST-2016-006)

Asterisk is prone to a denial of service DoS vulnerability. SPDX-FileCopyrightText: 2016 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:digium:asterisk"; if...

FreeBSD : asterisk -- Crash on ACK from unknown endpoint (7fda7920-7603-11e6-b362-001999f8d30b)

The Asterisk project reports : Asterisk can be crashed remotely by sending an ACK to it from an endpoint username that Asterisk does not recognize. Most SIP request types result in an 'artificial' endpoint being looked up, but ACKs bypass this lookup. The resulting NULL pointer results in a crash...

Digium Asterisk PJSIP Channel Driver REGISTER Denial of Service

A denial of service vulnerability exists in Digium Asterisk. The vulnerability is due to errors when processing incoming REGISTER requests with lengthy Contact Header URI. A remote authenticated attacker can exploit this vulnerability to cause a denial of service condition...

FreeBSD : PJSIP -- TCP denial of service in PJProject (e21474c6-031a-11e6-aa86-001999f8d30b)

The Asterisk project reports : PJProject has a limit on the number of TCP connections that it can accept. Furthermore, PJProject does not close TCP connections it accepts. By default, this value is approximately 60. An attacker can deplete the number of allowed TCP connections by opening TCP...

FreeBSD : asterisk -- Long Contact URIs in REGISTER requests can crash Asterisk (ee50726e-0319-11e6-aa86-001999f8d30b)

The Asterisk project reports : Asterisk may crash when processing an incoming REGISTER request if that REGISTER contains a Contact header with a lengthy URI. This crash will only happen for requests that pass authentication. Unauthenticated REGISTER requests will not result in a crash occurring...

asterisk -- Long Contact URIs in REGISTER requests can crash Asterisk

The Asterisk project reports: Asterisk may crash when processing an incoming REGISTER request if that REGISTER contains a Contact header with a lengthy URI. This crash will only happen for requests that pass authentication. Unauthenticated REGISTER requests will not result in a crash occurring...

DEBIAN-CVE-2015-1558

Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service file descriptor consumption via an SDP offer containing only incompatible codecs...

Code injection

Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service file descriptor consumption via an SDP offer containing only incompatible codecs...

CVE-2015-1558

Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service file descriptor consumption via an SDP offer containing only incompatible codecs...

CVE-2015-1558

Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service file descriptor consumption via an SDP offer containing only incompatible codecs...

CVE-2015-1558

CVE-2015-1558 affects Asterisk Open Source 12.x (before 12.8.1) and 13.x (before 13.1.1) when using the PJSIP channel driver. The vulnerability is due to improper reclamation of RTP ports, enabling remote authenticated users to cause a denial of service via an SDP offer that lists only incompatib...

CVE-2015-1558

Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service file descriptor consumption via an SDP offer containing only incompatible codecs...

CVE-2015-1558: Undefined Security Weakness

Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service file descriptor consumption via an SDP offer containing only incompatible codecs...

Asterisk chan_pjsip Incompatible Codecs DoS (AST-2015-001)

According to its SIP banner, the version of Asterisk running on the remote host has a flaw in which it fails to reclaim allocated RTP ports whenever a connection is made to an authenticated endpoint whose SPD offers only codecs that are not allowed by Asterisk. An attacker could exploit this...

AST-2015-001: File descriptor leak when incompatible codecs are offered

Asterisk Project Security Advisory - AST-2015-001 Product Asterisk Summary File descriptor leak when incompatible codecs are offered Nature of Advisory Resource exhaustion Susceptibility Remote Authenticated Sessions Severity Major Exploits Known No Reported On 6 January, 2015 Reported By Y Ateya...

FreeBSD : asterisk -- File descriptor leak when incompatible codecs are offered (2eeb6652-a7a6-11e4-96ba-001999f8d30b)

The Asterisk project reports : Asterisk may be configured to only allow specific audio or video codecs to be used when communicating with a particular endpoint. When an endpoint sends an SDP offer that only lists codecs not allowed by Asterisk, the offer is rejected. However, in this case, RTP...

Asterisk PJSIP Multiple Vulnerabilities (AST-2014-013 / AST-2014-015 / AST-2014-016)

According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by the following vulnerabilities in the PJSIP channel driver : - A security bypass vulnerability exists due to a flaw in the 'respjsipacl' module which may allow a remote attacke...

CVE-2014-8416

Use-after-free vulnerability in the PJSIP channel driver in Asterisk Open Source 12.x before 12.7.1 and 13.x before 13.0.1, when using the respjsiprefer module, allows remote attackers to cause a denial of service crash via an in-dialog INVITE with Replaces message, which triggers the channel to ...