| 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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| NVD severity | medium |
| Debian Bugs | 999567 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| busybox (PTS) | stretch | 1:1.22.0-19 | vulnerable |
| stretch (security) | 1:1.22.0-19+deb9u2 | vulnerable |
| buster | 1:1.30.1-4 | vulnerable |
| bullseye | 1:1.30.1-6 | vulnerable |
| bookworm, sid | 1:1.30.1-7 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| busybox | source | (unstable) | (unfixed) | | | 999567 |
Notes
[bullseye] - busybox <no-dsa> (Minor issue)
[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/