Improper Phone Line Validation in Cisco TelePresence VCS Expressway X8.5.2

CVE-2015-4316 · MEDIUM Severity

AV:N/AC:L/AU:S/C:P/I:N/A:P

The Mobile and Remote Access (MRA) endpoint-validation feature in Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.2 improperly validates the phone line used for registration, which allows remote authenticated users to conduct impersonation attacks via a crafted registration, aka Bug ID CSCuv40396.

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