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.
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)
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History
29 Dec 2023, 00:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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27 Dec 2023, 18:40
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-362 | |
| References | () https://github.com/asterisk/asterisk/security/advisories/GHSA-hxj9-xwr8-w8pq - Exploit, Vendor Advisory | |
| References | () http://seclists.org/fulldisclosure/2023/Dec/24 - Exploit, Mailing List, Third Party Advisory | |
| References | () https://github.com/asterisk/asterisk/commit/d7d7764cb07c8a1872804321302ef93bf62cba05 - Patch | |
| References | () https://github.com/EnableSecurity/advisories/tree/master/ES2023-01-asterisk-dtls-hello-race - Exploit | |
| References | () http://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html - Exploit, Third Party Advisory, VDB Entry | |
| References | () http://www.openwall.com/lists/oss-security/2023/12/15/7 - Exploit, Mailing List | |
| First Time |
Sangoma
Digium asterisk Sangoma certified Asterisk Digium |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.9 |
| CPE | cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert10:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:16.8.0:-:*:*:*:*:*:* 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:digium:asterisk:21.0.0:*:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert2:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert9:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert1:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert4:*:*:*:*:*:* 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:18.9:cert3:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert2:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc2:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:13.13.0:*:*:*:*:*:*:* cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:18.9:cert4:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert3:*:*:*:*:*:* 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:cert6:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc4:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:18.9:cert5:*:*:*:*:*:* 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:18.9:cert1:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc2:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc1:*:*:*:*:*:* cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc3:*:*:*:*:*:* |
20 Dec 2023, 01:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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15 Dec 2023, 16:15
| Type | Values Removed | Values Added |
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| New CVE |
Information
Published : 2023-12-14 20:15
Updated : 2024-02-28 20:54
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