Описание
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.
Ссылки
- ExploitThird Party AdvisoryVDB Entry
- ExploitMailing ListThird Party Advisory
- ExploitMailing List
- Exploit
- Patch
- ExploitVendor Advisory
- ExploitThird Party AdvisoryVDB Entry
- ExploitMailing ListThird Party Advisory
- ExploitMailing List
- Exploit
- Patch
- ExploitVendor Advisory
Уязвимые конфигурации
Одно из
EPSS
7.5 High
CVSS3
5.9 Medium
CVSS3
Дефекты
Связанные уязвимости
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.
Asterisk is an open source private branch exchange and telephony toolk ...
Уязвимость реализации протоколов DTLS (Datagram Transport Layer Security) и SRTP (Secure Real-time Transport Protocol) систем управления IP-телефонией Asterisk и Certified Asterisk, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
7.5 High
CVSS3
5.9 Medium
CVSS3