SB2016120311 - Multiple vulnerabilities in FFmpeg

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2014-9604)

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

libavcodec/utvideodec.c in FFmpeg before 2.5.2 does not check for a zero value of a slice height, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted Ut Video data, related to the (1) restore_median and (2) restore_median_il functions.

2) Input validation error (CVE-ID: CVE-2014-9603)

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The vmd_decode function in libavcodec/vmdvideo.c in FFmpeg before 2.5.2 does not validate the relationship between a certain length value and the frame width, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted Sierra VMD video data.

3) Input validation error (CVE-ID: CVE-2014-9602)

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

libavcodec/xface.h in FFmpeg before 2.5.2 establishes certain digits and words array dimensions that do not satisfy a required mathematical relationship, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted X-Face image data.

Remediation

Install update from vendor's website.

References

• http://git.videolan.org/?p=ffmpeg.git;a=commit;h=3881606240953b9275a247a1c98a567f3c44890f
• http://www.ubuntu.com/usn/USN-2534-1
• https://security.gentoo.org/glsa/201603-06
• http://git.videolan.org/?p=ffmpeg.git;a=commit;h=3030fb7e0d41836f8add6399e9a7c7b740b48bfd
• http://git.videolan.org/?p=ffmpeg.git;a=commit;h=93a5a16f136d095d23610f57bdad10ba88120fba