Vulnerability · Published Apr 29, 2021 · Assigned by GitHub_M
CVE-2021-21417Use after free in fluidsynth
High 7.2
In plain English
A high-severity use-after-free in fluidsynth from FluidSynth. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.9%top 38.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | fluidsynth | 2.1.7-1.1 | DEBIAN-CVE-2021-21417 |
| Debian:13 | fluidsynth | 2.1.7-1.1 | DEBIAN-CVE-2021-21417 |
| Debian:14 | fluidsynth | 2.1.7-1.1 | DEBIAN-CVE-2021-21417 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| FluidSynth | fluidsynth | < 2.1.8 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
References
- https://github.com/FluidSynth/fluidsynth/issues/808 x_refsource_MISC
- https://github.com/FluidSynth/fluidsynth/pull/810 x_refsource_MISC
- https://github.com/FluidSynth/fluidsynth/security/advisories/GHSA-6fcq-pxhc-jxc9 x_refsource_CONFIRM
- [debian-lts-announce] 20210629 [SECURITY] [DLA 2697-1] fluidsynth security update mailing-list, x_refsource_MLIST