RTSP RTP buffer over-read

Open Source Vulnerabilities CVE-2018-1000122

A buffer over-read exists in curl 7.20.0 to and including curl 7.58.0 in the RTSP+RTP handling code that allows an attacker to cause a denial of service or information leakage

Open Source Vulnerabilities CURL-CVE-2018-1000122

curl can be tricked into copying data beyond end of its heap based buffer. When asked to transfer an RTSP URL, curl could calculate a wrong data length to copy from the read buffer. The `memcpy()` call would copy data from the heap following the buffer to a storage area that would subsequently be delivered to the application (if it did not cause a crash). We have managed to get it to reach several hundreds bytes out of range. This could lead to information leakage or a denial of service for the application if the server offering the RTSP data can trigger this.