Total vulnerabilities in the database
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.
| Software | From | Fixed in |
|---|---|---|
| sangoma / certified_asterisk | 18.9-cert2 | 18.9-cert2.x |
| sangoma / certified_asterisk | 18.9-cert1 | 18.9-cert1.x |
| sangoma / certified_asterisk | 18.9-cert3 | 18.9-cert3.x |
| sangoma / certified_asterisk | 18.9-cert4 | 18.9-cert4.x |
| sangoma / certified_asterisk | 18.9-cert5 | 18.9-cert5.x |
| sangoma / certified_asterisk | 13.13.0 | 13.13.0.x |
| sangoma / certified_asterisk | 13.13.0-cert1 | 13.13.0-cert1.x |
| sangoma / certified_asterisk | 13.13.0-cert1-rc1 | 13.13.0-cert1-rc1.x |
| sangoma / certified_asterisk | 13.13.0-cert1-rc2 | 13.13.0-cert1-rc2.x |
| sangoma / certified_asterisk | 13.13.0-cert1-rc3 | 13.13.0-cert1-rc3.x |
| sangoma / certified_asterisk | 13.13.0-cert1-rc4 | 13.13.0-cert1-rc4.x |
| sangoma / certified_asterisk | 13.13.0-cert2 | 13.13.0-cert2.x |
| sangoma / certified_asterisk | 13.13.0-cert3 | 13.13.0-cert3.x |
| sangoma / certified_asterisk | 13.13.0-rc1 | 13.13.0-rc1.x |
| sangoma / certified_asterisk | 13.13.0-rc2 | 13.13.0-rc2.x |
| sangoma / certified_asterisk | 16.8.0 | 16.8.0.x |
| sangoma / certified_asterisk | 16.8.0-cert1 | 16.8.0-cert1.x |
| sangoma / certified_asterisk | 16.8.0-cert10 | 16.8.0-cert10.x |
| sangoma / certified_asterisk | 16.8.0-cert11 | 16.8.0-cert11.x |
| sangoma / certified_asterisk | 16.8.0-cert12 | 16.8.0-cert12.x |
| sangoma / certified_asterisk | 16.8.0-cert2 | 16.8.0-cert2.x |
| sangoma / certified_asterisk | 16.8.0-cert3 | 16.8.0-cert3.x |
| sangoma / certified_asterisk | 16.8.0-cert4 | 16.8.0-cert4.x |
| sangoma / certified_asterisk | 16.8.0-cert5 | 16.8.0-cert5.x |
| sangoma / certified_asterisk | 16.8.0-cert6 | 16.8.0-cert6.x |
| sangoma / certified_asterisk | 16.8.0-cert7 | 16.8.0-cert7.x |
| sangoma / certified_asterisk | 16.8.0-cert8 | 16.8.0-cert8.x |
| sangoma / certified_asterisk | 16.8.0-cert9 | 16.8.0-cert9.x |
| digium / asterisk | 21.0.0 | 21.0.0.x |
| digium / asterisk | - | 18.20.1 |
| digium / asterisk | 19.0.0 | 20.5.1 |