# Asterisk

- [SIPVicious tutorial: testing VoIP security with DVRTC](/blog/sipvicious-tutorial-voip-security-testing-with-dvrtc.md) (2026-04-13)
- [Introducing DVRTC: a vulnerable lab for RTC security](/blog/introducing-dvrtc-damn-vulnerable-real-time-communications.md) (2026-03-27)
- [New White Paper: DTLS "ClientHello" Race Conditions in WebRTC Implementations](/blog/webrtc-hello-race-conditions-paper.md) (2024-10-15)
- [A Novel DoS Vulnerability affecting WebRTC Media Servers](/blog/novel-dos-vulnerability-affecting-webrtc-media-servers.md) (2024-06-25)
- [Asterisk: denial of service via DTLS Hello packets during call initiation](/advisories/ES2023-01-asterisk-dtls-hello-race.md) (2023-12-15)
- [Exploiting CVE-2022-0778, a bug in OpenSSL vis-à-vis WebRTC platforms](/blog/exploiting-cve-2022-0778-in-openssl-vs-webrtc-platforms.md) (2022-04-08)
- [Asterisk: crash via INVITE flood over TCP](/advisories/ES2020-02-asterisk-tcp-invite-crash.md) (2020-11-06)
- [Asterisk PJSIP: crash via invalid SDP fmtp attribute](/advisories/ES2018-02-asterisk-pjsip-sdp-invalid-fmtp-segfault.md) (2018-02-22)
- [Asterisk PJSIP: crash via invalid SDP media format description](/advisories/ES2018-03-asterisk-pjsip-sdp-invalid-media-format-description-segfault.md) (2018-02-22)
- [Asterisk PJSIP: crash via repeated INVITE messages over TCP/TLS](/advisories/ES2018-04-asterisk-pjsip-tcp-segfault.md) (2018-02-22)
- [Asterisk PJSIP: stack corruption via large Accept header in SUBSCRIBE](/advisories/ES2018-01-asterisk-pjsip-subscribe-stack-corruption.md) (2018-02-22)
- [Asterisk: RTP Bleed vulnerability](/advisories/ES2017-04-asterisk-rtp-bleed.md) (2017-09-01)
- [Asterisk PJSIP: heap overflow in CSeq header parsing](/advisories/ES2017-01-asterisk-pjsip-cseq-overflow.md) (2017-05-23)
- [Asterisk PJSIP: out-of-bound memory access in multipart parser](/advisories/ES2017-02-asterisk-pjsip-multi-part-crash.md) (2017-05-23)
- [Asterisk Skinny: memory exhaustion denial of service](/advisories/ES2017-03-asterisk-chan-skinny-crash.md) (2017-05-23)
- [If SIPVicious gives you a ring...](/blog/if-sipvicious-gives-you-ring.md) (2012-12-10)