CVE-2023-49786

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-49786
Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1; as well as certified-asterisk prior to 18.9-cert6; Asterisk is susceptible to a DoS due to a race condition in the hello handshake phase of the DTLS protocol when handling DTLS-SRTP for media setup. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during the attack. Abuse of this vulnerability may lead to a massive Denial of Service on vulnerable Asterisk servers for calls that rely on DTLS-SRTP. Commit d7d7764cb07c8a1872804321302ef93bf62cba05 contains a fix, which is part of versions 18.20.1, 20.5.1, 21.0.1, amd 18.9-cert6.

5.9 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
http://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2023/Dec/24 Exploit Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/12/15/7 Exploit Mailing List
https://github.com/EnableSecurity/advisories/tree/master/ES2023-01-asterisk-dtls-hello-race Exploit
https://github.com/asterisk/asterisk/commit/d7d7764cb07c8a1872804321302ef93bf62cba05 Patch
https://github.com/asterisk/asterisk/security/advisories/GHSA-hxj9-xwr8-w8pq Exploit Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:21.0.0:*:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:*:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc4:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:-:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert10:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert11:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert12:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert4:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert5:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert6:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert7:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert8:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert9:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert4:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert5:*:*:*:*:*:*
History

29 Dec 2023, 00:15

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html -

27 Dec 2023, 18:40

Type Values Removed Values Added
First Time Sangoma
Sangoma certified Asterisk
Digium asterisk
Digium
CVSS v2 : unknown
v3 : 7.5 		v2 : unknown
v3 : 5.9
CPE cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:-:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert6:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:21.0.0:*:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert7:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert5:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert4:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert10:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:*:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert8:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert9:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert11:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert2:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert4:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert5:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert3:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert12:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1:*:*:*:*:*:*
cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc4:*:*:*:*:*:*
CWE CWE-362
References () http://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html - () http://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html - Exploit, Third Party Advisory, VDB Entry
References () http://seclists.org/fulldisclosure/2023/Dec/24 - () http://seclists.org/fulldisclosure/2023/Dec/24 - Exploit, Mailing List, Third Party Advisory
References () http://www.openwall.com/lists/oss-security/2023/12/15/7 - () http://www.openwall.com/lists/oss-security/2023/12/15/7 - Exploit, Mailing List
References () https://github.com/EnableSecurity/advisories/tree/master/ES2023-01-asterisk-dtls-hello-race - () https://github.com/EnableSecurity/advisories/tree/master/ES2023-01-asterisk-dtls-hello-race - Exploit
References () https://github.com/asterisk/asterisk/commit/d7d7764cb07c8a1872804321302ef93bf62cba05 - () https://github.com/asterisk/asterisk/commit/d7d7764cb07c8a1872804321302ef93bf62cba05 - Patch
References () https://github.com/asterisk/asterisk/security/advisories/GHSA-hxj9-xwr8-w8pq - () https://github.com/asterisk/asterisk/security/advisories/GHSA-hxj9-xwr8-w8pq - Exploit, Vendor Advisory

20 Dec 2023, 01:15

Type Values Removed Values Added
References
  • () http://seclists.org/fulldisclosure/2023/Dec/24 -

15 Dec 2023, 16:15

Type Values Removed Values Added
References
  • () http://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html -

15 Dec 2023, 15:15

Type Values Removed Values Added
Summary
  • (es) Asterisk es un conjunto de herramientas de telefonía y centralita privada de código abierto. En Asterisk anteriores a las versiones 18.20.1, 20.5.1 y 21.0.1; así como certificado-asterisco anterior a 18.9-cert6; Asterisk es susceptible a un DoS debido a una condición de ejecución en la fase "hello handshake" del protocolo DTLS cuando maneja DTLS-SRTP para la configuración de medios. Este ataque se puede realizar de forma continua, negando así nuevas llamadas cifradas DTLS-SRTP durante el ataque. El abuso de esta vulnerabilidad puede provocar una denegación de servicio masiva en servidores Asterisk vulnerables para llamadas que dependen de DTLS-SRTP. El commit d7d7764cb07c8a1872804321302ef93bf62cba05 contiene una solución, que forma parte de las versiones 18.20.1, 20.5.1, 21.0.1, amd 18.9-cert6.
References
  • () http://www.openwall.com/lists/oss-security/2023/12/15/7 -

14 Dec 2023, 20:15

Type Values Removed Values Added
New CVE
Information

Published : 2023-12-14 20:15

Updated : 2023-12-29 00:15

NVD link : CVE-2023-49786

Mitre link : CVE-2023-49786

CVE.ORG link : CVE-2023-49786

JSON object : View

Products Affected

digium

  • asterisk

sangoma

  • certified_asterisk
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-703

Improper Check or Handling of Exceptional Conditions