CVE-2021-42378

Name

CVE-2021-42378

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 getvar_i function

NVD Severity

medium

Other trackers

CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia

Mailing lists

oss-security, full-disclosure, bugtraq

Exploits

Exploit DB, Metasploit

Forges

GitHub (code, issues), Aports (code, issues)

References

Type	URI
Third Party Advisory	https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
Mailing List	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
Mailing List	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/
Third Party Advisory	https://security.netapp.com/advisory/ntap-20211223-0002/

Match rules

CPE URI	Source package	Min version	Max version
`cpe:2.3:a:busybox:busybox::::::::`	busybox	>= 1.16.0	<= 1.33.1

Vulnerable and fixed packages

Source package	Branch	Version	Maintainer	Status
busybox	3.11-main	1.31.1-r11	Natanael Copa <ncopa@alpinelinux.org>	fixed
busybox	3.12-main	1.31.1-r22	Natanael Copa <ncopa@alpinelinux.org>	fixed
busybox	3.14-main	1.33.1-r8	Natanael Copa <ncopa@alpinelinux.org>	fixed
busybox	3.13-main	1.32.1-r9	Natanael Copa <ncopa@alpinelinux.org>	fixed