Title: Libnemesi Multiple Remote Buffer Overflow Vulnerabilities
Severity: HIGH
Description:
Libnemesi is an open-source client library used for implementing RTSP/RTP streaming in applications.
Since it fails to perform adequate boundary checks on user-supplied input, Libnemesi is prone to multiple buffer-overflow vulnerabilities:
- The 'handle_rtsp_pkt()' function in the 'rtsp/rtsp_handlers.c' source file uses an 'sscanf()' function to copy version infomation to the 'ver' buffer without size-checks.
- The 'send_*_request()' functions in the 'rtsp/rtsp_send.c' source file aren't sized-checked before data is copied to various unspecified buffers. These functions include:
send_pause_request()
send_play_request()
send_setup_request()
send_teardown_request()
- The 'get_transport_str_*()' functions in the 'rtsp/rtsp_transport.c' source file copy data to buffers with 'strncpy()' used in an insecure manner. The size parameter refers to the source buffer rather than the destination buffer. These functions include:
get_transport_str_sctp()
get_transport_str_tcp()
get_transport_str_udp()
Attackers can exploit these issues to execute arbitrary code in the context of an application using the library. Failed attacks will cause denial-of-service conditions.
Libnemesi 0.6.4-rc1 is vulnerable; other versions may also be affected.
Affected Products:
- Politecnico di Torino Libnemesi 0.6.4-rc1
References:
- Politecnico di Torino: Libnemesi Homepage
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