CVE-2017-7866

Description

FFmpeg before 2017-01-23 has an out-of-bounds write caused by a stack-based buffer overflow related to the decode_zbuf function in libavcodec/pngdec.c.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.64% Top 20%
Third-Party Advisory securityfocus.com Third-Party Advisory chromium.org Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/97664 vdb entry third party advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=444 vdb entry third party advisory
https://github.com/FFmpeg/FFmpeg/commit/e371f031b942d73e02c090170975561fabd5c264 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2017-7866?
CVE-2017-7866 has been scored as a critical severity vulnerability.
How to fix CVE-2017-7866?
To fix CVE-2017-7866, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7866 being actively exploited in the wild?
It is possible that CVE-2017-7866 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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