Use After Free in Fluidsynth
CVE-2021-21417
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
- Fluidsynth — versions < 2.1.8
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- github.com/FluidSynth/fluidsynth/issues/808 (Exploit, Third Party Advisory)
- github.com/FluidSynth/fluidsynth/pull/810 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- github.com/FluidSynth/fluidsynth/security/advisories/GHSA-6fcq-pxhc-jxc9 (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/06/msg00027.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21417?
- CVE-2021-21417 is a high-severity vulnerability in Fluidsynth, classified under Use After Free. CVSS score: 7.2/10. Published 2021-04-29.
- How severe is CVE-2021-21417?
- High severity. CVSS v3 base score is 7.2 out of 10.