Asterisk DoS Vulnerability (AST-2021-002)

Asterisk is prone to a denial of service vulnerability when negotiating T.38. SPDX-FileCopyrightText: 2021 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 =...

Asterisk DoS Vulnerability (AST-2021-001)

Asterisk is prone to a denial of service vulnerability in respjsipdiversion. SPDX-FileCopyrightText: 2021 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 =...

CVE-2021-26713: Out-of-bounds Write

A stack-based buffer overflow in resrtpasterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession...

PT-2021-17107 · Sangoma +1 · Asterisk +1

Name of the Vulnerable Software and Affected Versions: Sangoma Asterisk versions prior to 16.16.1 Sangoma Asterisk versions 17.x prior to 17.9.2 Sangoma Asterisk versions 18.x prior to 18.2.1 Certified Asterisk versions prior to 16.8-cert6 Description: A stack-based buffer overflow in res rtp...

FreeBSD : asterisk -- Remote crash possible when negotiating T.38 (e3894955-7227-11eb-8386-001999f8d30b)

The Asterisk project reports : When re-negotiating for T.38 if the initial remote response was delayed just enough Asterisk would send both audio and T.38 in the SDP. If this happened, and the remote responded with a declined T.38 stream then Asterisk would crash. C Tenable Network Security, Inc...

Digium Certified Asterisk Buffer Error Vulnerability

Digium Certified Asterisk is a set of open source telephone exchange PBX system software from Digium, USA. The software supports voicemail, multi-party voice conferencing, interactive voice response IVR, and more. A buffer error vulnerability exists in Digium Certified Asterisk. The vulnerability...

FreeBSD : asterisk -- An unsuspecting user could crash Asterisk with multiple hold/unhold requests (ca21f5e7-7228-11eb-8386-001999f8d30b)

The Asterisk project reports : Due to a signedness comparison mismatch, an authenticated WebRTC client could cause a stack overflow and Asterisk crash by sending multiple hold/unhold requests in quick succession. C Tenable Network Security, Inc. The descriptive text and package checks in this...

FreeBSD : asterisk -- Remote crash in res_pjsip_diversion (b330db5f-7225-11eb-8386-001999f8d30b)

The Asterisk project reports : If a registered user is tricked into dialing a malicious number that sends lots of 181 responses to Asterisk, each one will cause a 181 to be sent back to the original caller with an increasing number of entries in the 'Supported' header. Eventually the number of...

FreeBSD : asterisk -- Remote Crash Vulnerability in PJSIP channel driver (1bb2826b-7229-11eb-8386-001999f8d30b)

The Asterisk project reports : Given a scenario where an outgoing call is placed from Asterisk to a remote SIP server it is possible for a crash to occur. C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from the FreeBSD VuXML database :...

FreeBSD : asterisk -- Remote attacker could prematurely tear down SRTP calls (5d8ef725-7228-11eb-8386-001999f8d30b)

The Asterisk project reports : An unauthenticated remote attacker could replay SRTP packets which could cause an Asterisk instance configured without strict RTP validation to tear down calls prematurely. C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were...

CVE-2021-26712

Incorrect access controls in ressrtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets...

ALPINE-CVE-2021-26712

Incorrect access controls in ressrtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets...

CVE-2021-26712

Incorrect access controls in ressrtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets...

Design/Logic Flaw

Incorrect access controls in ressrtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets...

CVE-2021-26712

Incorrect access controls in ressrtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets...

UBUNTU-CVE-2021-26712

Incorrect access controls in ressrtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets...

ALPINE-CVE-2021-26906

An issue was discovered in respjsipsession.c in Digium Asterisk through 13.38.1; 14.x, 15.x, and 16.x through 16.16.0; 17.x through 17.9.1; and 18.x through 18.2.0, and Certified Asterisk through 16.8-cert5. An SDP negotiation vulnerability in PJSIP allows a remote server to potentially crash...

CVE-2020-35776

A buffer overflow in respjsipdiversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses...

ALPINE-CVE-2020-35776

A buffer overflow in respjsipdiversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses...

CVE-2021-26717

An issue was discovered in Sangoma Asterisk 16.x before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6. When re-negotiating for T.38, if the initial remote response was delayed just enough, Asterisk would send both audio and T.38 in the SDP. If this...