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CVSS: 5.3EPSS: 2%CPEs: 16EXPL: 1

06 Nov 2020 — A res_pjsip_session crash was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1. and Certified Asterisk before 16.8-cert5. Upon receiving a new SIP Invite, Asterisk did not return the created dialog locked or referenced. This caused a gap between the creation of the dialog object, and its next use by the thread that created it. Depending on some off-nominal circumstances and timing, it was possible for another thread to free said dialog i... • http://downloads.asterisk.org/pub/security/AST-2020-001.html • CWE-404: Improper Resource Shutdown or Release •

CVSS: 9.0EPSS: 32%CPEs: 11EXPL: 0

21 Nov 2019 — An issue was discovered in manager.c in Sangoma Asterisk through 13.x, 16.x, 17.x and Certified Asterisk 13.21 through 13.21-cert4. A remote authenticated Asterisk Manager Interface (AMI) user without system authorization could use a specially crafted Originate AMI request to execute arbitrary system commands. Se detectó un problema en el archivo manager.c en Sangoma Asterisk versiones hasta 13.x, 16.x, 17.x y Certified Asterisk versiones 13.21 hasta 13.21-cert4. Un usuario de Asterisk Manager Interface (AM... • http://downloads.asterisk.org/pub/security/AST-2019-007.html • CWE-862: Missing Authorization •

CVSS: 6.5EPSS: 7%CPEs: 11EXPL: 0

21 Nov 2019 — An issue was discovered in channels/chan_sip.c in Sangoma Asterisk 13.x before 13.29.2, 16.x before 16.6.2, and 17.x before 17.0.1, and Certified Asterisk 13.21 before cert5. A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result. The only thing that needs to be known is the peer's name; authentication details such as passwords do not need to be known. This vulnerability is only exploitable when the nat option i... • http://downloads.asterisk.org/pub/security/AST-2019-006.html • CWE-862: Missing Authorization •

CVSS: 7.5EPSS: 0%CPEs: 7EXPL: 0

21 Nov 2019 — An issue was discovered in res_pjsip_t38.c in Sangoma Asterisk through 13.x and Certified Asterisk through 13.21-x. If it receives a re-invite initiating T.38 faxing and has a port of 0 and no c line in the SDP, a NULL pointer dereference and crash will occur. This is different from CVE-2019-18940. Se detectó un problema en el archivo res_pjsip_t38.c en Sangoma Asterisk versiones hasta 13.x y Certified Asterisk versiones hasta 13.21-x. Si recibe una nueva invitación para iniciar el envío de faxes T.38 y tie... • http://downloads.asterisk.org/pub/security/AST-2019-008.html • CWE-476: NULL Pointer Dereference •

CVSS: 6.5EPSS: 19%CPEs: 8EXPL: 0

12 Jul 2019 — Buffer overflow in res_pjsip_messaging in Digium Asterisk versions 13.21-cert3, 13.27.0, 15.7.2, 16.4.0 and earlier allows remote authenticated users to crash Asterisk by sending a specially crafted SIP MESSAGE message. Desbordamiento de búfer en res_pjsip_messaging en Digium Asterisk versiones 13.21-cert3, 13.27.0, 15.7.2, 16.4.0 versiones anteriores permite a los atacantes remotos autenticados cerrar inesperadamente Asterisk enviando un mensaje SIP MESSAGE especialmente diseñado. A specially crafted SIP i... • http://downloads.digium.com/pub/security/AST-2019-002.html • CWE-787: Out-of-bounds Write •

CVSS: 5.3EPSS: 2%CPEs: 217EXPL: 0

12 Jul 2019 — An issue was discovered in Asterisk Open Source through 13.27.0, 14.x and 15.x through 15.7.2, and 16.x through 16.4.0, and Certified Asterisk through 13.21-cert3. A pointer dereference in chan_sip while handling SDP negotiation allows an attacker to crash Asterisk when handling an SDP answer to an outgoing T.38 re-invite. To exploit this vulnerability an attacker must cause the chan_sip module to send a T.38 re-invite request to them. Upon receipt, the attacker must send an SDP answer containing both a T.3... • http://downloads.digium.com/pub/security/AST-2019-003.html • CWE-476: NULL Pointer Dereference •

CVSS: 7.5EPSS: 80%CPEs: 33EXPL: 0

20 Sep 2018 — There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket. Hay una vulnerabilidad de consumo de pila en el módulo res_http_websocket.so de Asterisk hasta la versión 13.23.0; versiones 14.7.x anteriores a la 14.7.7 y las versiones 15.x anteriores a la 15... • http://downloads.asterisk.org/pub/security/AST-2018-009.html • CWE-400: Uncontrolled Resource Consumption •

CVSS: 5.3EPSS: 1%CPEs: 8EXPL: 0

12 Jun 2018 — An issue was discovered in Asterisk Open Source 13.x before 13.21.1, 14.x before 14.7.7, and 15.x before 15.4.1 and Certified Asterisk 13.18-cert before 13.18-cert4 and 13.21-cert before 13.21-cert2. When endpoint specific ACL rules block a SIP request, they respond with a 403 forbidden. However, if an endpoint is not identified, then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed ... • http://downloads.asterisk.org/pub/security/AST-2018-008.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.5EPSS: 73%CPEs: 7EXPL: 3

22 Feb 2018 — A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. When processing a SUBSCRIBE request, the res_pjsip_pubsub module stores the accepted formats present in the Accept headers of the request. This code did not limit the number of headers it processed, despite having a fixed limit of 32. If more than 32 Accept headers were present, the code would write outside of its memory and cause a crash. Se ha descub... • https://packetstorm.news/files/id/146577 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 6.5EPSS: 63%CPEs: 5EXPL: 2

22 Feb 2018 — An issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. res_pjsip allows remote authenticated users to crash Asterisk (segmentation fault) by sending a number of SIP INVITE messages on a TCP or TLS connection and then suddenly closing the connection. Se ha descubierto un problema en Asterisk hasta la versión 13.19.1, versiones 14.x hasta la 14.7.5 y versiones 15.x hasta la 15.2.1; así como Certified Asterisk hasta la vers... • https://packetstorm.news/files/id/146580 •