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Home » Cyber Security News » Critical Flaw Found in Streaming Library Used by VLC and Other Media Players

Critical Flaw Found in Streaming Library Used by VLC and Other Media Players

Security researchers have discovered a serious code execution vulnerability in the LIVE555 Streaming Media library—which is being used by popular media players including VLC and MPlayer, along with a number of embedded devices capable of streaming media.

LIVE555 streaming media, developed and maintained by Live Networks, is a set of C++ libraries companies and application developers use to stream multimedia over open standard protocols like RTP/RTCP, RTSP or SIP.

The LIVE555 streaming media libraries support streaming, receiving, and processing of various video formats such as MPEG, H.265, H.264, H.263+, VP8, DV, and JPEG video, and several audio codecs such as MPEG, AAC, AMR, AC-3, and Vorbis.

The vulnerable library is internally being used by many well-known media software such as VLC and MPlayer, exposing their millions of users to cyber attacks.

The code execution vulnerability, tracked as CVE-2018-4013 and discovered by researcher Lilith Wyatt of Cisco Talos Intelligence Group, resides in the HTTP packet-parsing functionality of the LIVE555 RTSP, which parses HTTP headers for tunneling RTSP over HTTP.

To exploit this vulnerability, all an attacker needs to do is create and send “a packet containing multiple ‘Accept:’ or ‘x-sessioncookie’ strings” to the vulnerable application, which will trigger a stack buffer overflow in the ‘lookForHeader’ function, leading to arbitrary code execution.

Cisco Talos team confirmed the vulnerability in Live Networks LIVE555 Media Server version 0.92, but the team believes the security issue may also be present in the earlier version of the product.

Cisco Talos responsibly reported the vulnerability to Live Networks on October 10 and publicly disclosed the security issue on October 18 after the vendor released security patches on October 17.

 

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