CVE-2014-7933 Use after free in n/a

What is CVE-2014-7933?

CVE-2014-7933 is a high-severity use after free vulnerability in Ffmpeg Ffmpeg, published on 22 Jan 2015. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Use-after-free vulnerability in the matroska_read_seek function in libavformat/matroskadec.c in FFmpeg before 2.5.1, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted Matroska file that triggers improper maintenance of tracks data.

Which versions are affected by CVE-2014-7933?

It affects 2 products.

Products include Ffmpeg Ffmpeg, Google Chrome.

How do I fix CVE-2014-7933?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2014-7933 being exploited?

There is no known exploitation of CVE-2014-7933 in the wild and no public exploit code.

Other vulnerabilities in Ffmpeg Ffmpeg

• CVE-2013-0864 Memory corruption in n/a Critical 10.0
• CVE-2013-0872 Memory corruption in n/a Critical 10.0
• CVE-2013-0873 Memory corruption in n/a Critical 10.0
• CVE-2013-4265 Null dereference in n/a Critical 10.0
• CVE-2011-3937 Memory corruption in n/a Critical 10.0

All Ffmpeg Ffmpeg vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2014-7933, GHSA-m52w-9gvm-79q5, UBUNTU-CVE-2014-7933.