CVE-2021-21417

Public Exploit
Use after free in fluidsynth

Description

fluidsynth is a software synthesizer based on the SoundFont 2 specifications. A use after free violation was discovered in fluidsynth, that can be triggered when loading an invalid SoundFont file.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.53%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory debian.org
Affected: FluidSynth fluidsynth
Published at:
Updated at:

References

Link Tags
https://github.com/FluidSynth/fluidsynth/issues/808 third party advisory exploit
https://github.com/FluidSynth/fluidsynth/pull/810 issue tracking patch exploit third party advisory
https://github.com/FluidSynth/fluidsynth/security/advisories/GHSA-6fcq-pxhc-jxc9 third party advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00027.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-21417?
CVE-2021-21417 has been scored as a high severity vulnerability.
How to fix CVE-2021-21417?
To fix CVE-2021-21417, 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-2021-21417 being actively exploited in the wild?
It is possible that CVE-2021-21417 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21417?
CVE-2021-21417 affects FluidSynth fluidsynth.
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