Double To Header Denial of Service and Arbitrary Code Execution Vulnerability

CVE-2018-14767 · HIGH Severity

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

In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with a double "To" header and an empty "To" tag causes a segmentation fault and crash. The reason is missing input validation in the "build_res_buf_from_sip_req" core function. This could result in denial of service and potentially the execution of arbitrary code.

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