VoIP Wars: Attack of the Cisco Phones
summary
Hosted Cisco VoIP deployments are vulnerable to practical attacks demonstrated with the Viproy (VRO) toolkit (a dozen modules) and a custom MITM proxy: DHCP/TFTP spoofing lets an attacker serve fake phone configs, Remote‑Party‑ID injection enables caller‑ID spoofing and billing bypass, and hardcoded SSH keys in domain manager allow server access; binary Skinny protocol fuzzing registers/clones phones to disconnect or impersonate lines, modify call‑forward/speed‑dials, and crash soft clients. Live demos and proof‑of‑concept tools work against unpatched versions.
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chapters (13)
- 0:00Introduction and agenda
- 3:41Hosted VoIP infrastructure
- 6:26Network and physical access
- 10:31Hardware tampering
- 12:46Network service attacks
- 14:33Collaboration suite threats
- 17:44Web application vulnerabilities
- 21:35XML service exploitation
- 29:55SIP protocol attacks
- 36:12Caller ID and identity spoofing
- 39:02Client-side and fuzzing
- 47:34Skinny protocol exploitation
- 57:31Remediation and conclusion
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