| Name | CVE-2021-42380 |
| 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 clrvar function |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4019-1 |
| Debian Bugs | 999567 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| busybox (PTS) | bullseye | 1:1.30.1-6 | vulnerable |
| bullseye (security) | 1:1.30.1-6+deb11u1 | fixed |
| bookworm | 1:1.35.0-4 | fixed |
| trixie, sid | 1:1.37.0-6 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - busybox <no-dsa> (Minor issue)
[stretch] - busybox <postponed> (Minor issue, requires passing arbitrary awk program, no identified patch)
https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/