FFmpeg 2.x allows remote attackers to conduct cross-origin attacks and read arbitrary files by using the concat protocol in an HTTP Live Streaming (HLS) M3U8 file, leading to an external HTTP request in which the URL string contains the first line of a local file.

The remote host is affected by the vulnerability described in GLSA-201705-08 (libav: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in libav. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could entice a user to open a specially crafted media       file in an application linked against libav, possibly resulting in       execution of arbitrary code with the privileges of the application, a       Denial of Service condition or access the content of arbitrary local       files.
  Workaround :

    There is no known workaround at this time.

The remote host is affected by the vulnerability described in GLSA-201606-09 (FFmpeg: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in FFmpeg. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could possibly execute arbitrary code or cause a       Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

It was discovered that Libav incorrectly handled certain malformed media files. If a user were tricked into opening a crafted media file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several security issues have been corrected in multiple demuxers and decoders of the libav multimedia library.

New MPlayer packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues.

This update to ffmpeg 2.8.5 fixes the following issues :

  - CVE-2016-1897: Cross-origin issue in URL processing     (concat) - local file disclosure (boo#961937)

  - CVE-2016-1898: Cross-origin issue in URL processing     (subfile) - local file disclosure (boo#961937)

Arch Linux reports :

ffmpeg has a vulnerability in the current version that allows the attacker to create a specially crafted video file, downloading which will send files from a user PC to a remote attacker server. The attack does not even require the user to open that file -- for example, KDE Dolphin thumbnail generation is enough.

ID	Name	Product	Family	Severity
100085	GLSA-201705-08 : libav: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
91703	GLSA-201606-09 : FFmpeg: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
90349	Ubuntu 12.04 LTS : libav vulnerabilities (USN-2944-1)	Nessus	Ubuntu Local Security Checks	high
89696	Debian DSA-3506-1 : libav - security update	Nessus	Debian Local Security Checks	high
88565	Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : MPlayer (SSA:2016-034-02)	Nessus	Slackware Local Security Checks	medium
88400	openSUSE Security Update : ffmpeg (openSUSE-2016-94)	Nessus	SuSE Local Security Checks	medium
87980	FreeBSD : ffmpeg -- remote attacker can access local files (046fedd1-bd01-11e5-bbf4-5404a68ad561)	Nessus	FreeBSD Local Security Checks	medium

Detections

Analytics

CVE-2016-1897

medium

Tenable Plugins

high

high

high

high

medium

medium

medium