Several vulnerabilities have been discovered in FFmpeg, a multimedia player, server and encoder. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2010-3908     FFmpeg before 0.5.4, allows remote attackers to cause a     denial of service (memory corruption and application     crash) or possibly execute arbitrary code via a     malformed WMV file.

  - CVE-2010-4704     libavcodec/vorbis_dec.c in the Vorbis decoder in FFmpeg     allows remote attackers to cause a denial of service     (application crash) via a crafted Ogg file, related to     the vorbis_floor0_decode function.

  - CVE-2011-0480     Multiple buffer overflows in vorbis_dec.c in the Vorbis     decoder in FFmpeg allow remote attackers to cause a     denial of service (memory corruption and application     crash) or possibly have unspecified other impact via a     crafted WebM file, related to buffers for the channel     floor and the channel residue.

  - CVE-2011-0722     FFmpeg allows remote attackers to cause a denial of     service (heap memory corruption and application crash)     or possibly execute arbitrary code via a malformed     RealMedia file.

Multiple vulnerabilities has been identified and fixed in ffmpeg :

oggparsevorbis.c in FFmpeg 0.5 does not properly perform certain pointer arithmetic, which might allow remote attackers to obtain sensitive memory contents and cause a denial of service via a crafted file that triggers an out-of-bounds read. (CVE-2009-4632)

vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow. (CVE-2009-4633)

Multiple integer underflows in FFmpeg 0.5 allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that (1) bypasses a validation check in vorbis_dec.c and triggers a wraparound of the stack pointer, or (2) access a pointer from out-of-bounds memory in mov.c, related to an elst tag that appears before a tag that creates a stream. (CVE-2009-4634)

FFmpeg 0.5 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted MOV container with improperly ordered tags that cause (1) mov.c and (2) utils.c to use inconsistent codec types and identifiers, which causes the mp3 decoder to process a pointer for a video structure, leading to a stack-based buffer overflow. (CVE-2009-4635)

FFmpeg 0.5 allows remote attackers to cause a denial of service (hang) via a crafted file that triggers an infinite loop. (CVE-2009-4636)

The av_rescale_rnd function in the AVI demuxer in FFmpeg 0.5 allows remote attackers to cause a denial of service (crash) via a crafted AVI file that triggers a divide-by-zero error. (CVE-2009-4639)

Array index error in vorbis_dec.c in FFmpeg 0.5 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted Vorbis file that triggers an out-of-bounds read.
(CVE-2009-4640)

flicvideo.c in libavcodec 0.6 and earlier in FFmpeg, as used in MPlayer and other products, allows remote attackers to execute arbitrary code via a crafted flic file, related to an arbitrary offset dereference vulnerability. (CVE-2010-3429)

Fix memory corruption in WMV parsing (CVE-2010-3908)

libavcodec/vorbis_dec.c in the Vorbis decoder in FFmpeg 0.6.1 and earlier allows remote attackers to cause a denial of service (application crash) via a crafted .ogg file, related to the vorbis_floor0_decode function. (CVE-2010-4704)

Multiple buffer overflows in vorbis_dec.c in the Vorbis decoder in FFmpeg, as used in Google Chrome before 8.0.552.237 and Chrome OS before 8.0.552.344, allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via a crafted WebM file, related to buffers for (1) the channel floor and (2) the channel residue. (CVE-2011-0480)

Fix heap corruption crashes (CVE-2011-0722)

Fix invalid reads in VC-1 decoding (CVE-2011-0723)

And several additional vulnerabilities originally discovered by Google Chrome developers were also fixed with this advisory.

The updated packages have been patched to correct these issues.

The remote host is affected by the vulnerability described in GLSA-201310-12 (FFmpeg: Multiple vulnerabilities)

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

    A remote attacker could entice a user to open a specially crafted media       file, possibly leading to the execution of arbitrary code with the       privileges of the user running the application or a Denial of Service.
  Workaround :

    There is no known workaround at this time.

Cesar Bernardini and Felipe Andres Manzano discovered that FFmpeg incorrectly handled certain malformed flic files. If a user were tricked into opening a crafted flic 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. This issue only affected Ubuntu 8.04 LTS, 9.10 and 10.04 LTS. (CVE-2010-3429)

Dan Rosenberg discovered that FFmpeg incorrectly handled certain malformed wmv files. If a user were tricked into opening a crafted wmv 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. This issue only affected Ubuntu 8.04 LTS, 9.10 and 10.04 LTS. (CVE-2010-3908)

It was discovered that FFmpeg incorrectly handled certain malformed ogg files. If a user were tricked into opening a crafted ogg 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. (CVE-2010-4704)

It was discovered that FFmpeg incorrectly handled certain malformed WebM files. If a user were tricked into opening a crafted WebM 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. (CVE-2011-0480)

Dan Rosenberg discovered that FFmpeg incorrectly handled certain malformed RealMedia files. If a user were tricked into opening a crafted RealMedia 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. This issue only affected Ubuntu 8.04 LTS, 9.10 and 10.04 LTS. (CVE-2011-0722)

Dan Rosenberg discovered that FFmpeg incorrectly handled certain malformed VC1 files. If a user were tricked into opening a crafted VC1 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. (CVE-2011-0723).

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.

ID	Name	Product	Family	Published	Updated	Severity
56144	Debian DSA-2306-1 : ffmpeg - several vulnerabilities	Nessus	Debian Local Security Checks	9/12/2011	1/11/2021	high
53273	Mandriva Linux Security Advisory : ffmpeg (MDVSA-2011:061)	Nessus	Mandriva Local Security Checks	4/4/2011	1/6/2021	critical
70647	GLSA-201310-12 : FFmpeg: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	10/27/2013	1/6/2021	critical
53296	Ubuntu 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : ffmpeg vulnerabilities (USN-1104-1)	Nessus	Ubuntu Local Security Checks	4/5/2011	9/19/2019	high

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