Denial of Service and Arbitrary Code Execution Vulnerability in Kamailio

Denial of Service and Arbitrary Code Execution Vulnerability in Kamailio

CVE-2018-16657 · 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 an invalid Via header causes a segmentation fault and crashes Kamailio. The reason is missing input validation in the crcitt_string_array core function for calculating a CRC hash for To tags. (An additional error is present in the check_via_address core function: this function also misses input validation.) This could result in denial of service and potentially the execution of arbitrary code.

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