CVE-2021-42377

NameCVE-2021-42377
DescriptionAn attacker-controlled pointer free in Busybox's hush applet leads to denial of service and possible code execution when processing a crafted shell command, due to the shell mishandling the &&& string. This may be used for remote code execution under rare conditions of filtered command input.
SourceCVE (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 severitymedium
Debian Bugs999567

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
busybox (PTS)stretch1:1.22.0-19fixed
stretch (security)1:1.22.0-19+deb9u2fixed
buster1:1.30.1-4vulnerable
bullseye1:1.30.1-6vulnerable
bookworm, sid1:1.30.1-7vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
busyboxsourcestretch(not affected)
busyboxsource(unstable)(unfixed)999567

Notes

[bullseye] - busybox <no-dsa> (Minor issue)
[buster] - busybox <no-dsa> (Minor issue)
[stretch] - busybox <not-affected> (CONFIG_HUSH is not set)
https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/

Search for package or bug name: Reporting problems