CVE-2021-4156
libsndfile - security update
7.1
HIGH
CVSS 3.1
EPSS 0.10%
Description
An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.
How to fix CVE-2021-4156
To remediate CVE-2021-4156, upgrade the affected package to a fixed version below.
- —upgrade to 1.0.31-2+deb11u2 or later
- —upgrade to 1.0.28-6+deb10u2 or later
- —upgrade to 1.0.31-2+deb11u2 or later
Is CVE-2021-4156 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.0.31-2+deb11u2
- from 0, < 1.0.28-6+deb10u2
- from 0, < 1.0.31-2+deb11u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H |