CVE-2021-42386
7.2
HIGH
CVSS 3.1
EPSS 0.29%
Description
A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the nvalloc function
How to fix CVE-2021-42386
To remediate CVE-2021-42386, upgrade the affected package to a fixed version below.
- Alpine/busybox—upgrade to 1.31.1-r11 or later
- Debian/busybox—upgrade to 1:1.30.1-6+deb11u1 or later
Is CVE-2021-42386 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.31.1-r11
- from 0, < 1:1.30.1-6+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |