Integer overflow in the real_setup_and_get_header function in real.c for Unix MPlayer 1.0pre5 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a Real RTSP streaming media file with a -1 content-length field, which leads to a heap-based buffer overflow.
https://exchange.xforce.ibmcloud.com/vulnerabilities/18525
http://www1.mplayerhq.hu/MPlayer/releases/ChangeLog
http://www1.mplayerhq.hu/MPlayer/patches/rtsp_fix_20041215.diff
http://www.mandriva.com/security/advisories?name=MDKSA-2004:157