CVE-2021-42382
HIGHBusybox 1.26.0-1.33.0 - Use-After-Free in awk Applet via Crafted Pattern
Title source: llmDescription
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_s function
References (6)
Core 6
Core References
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
Various Sources
https://claroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovered-by-claroty-jfrog
Third Party Advisory
https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211223-0002/
Scores
CVSS v3
7.2
EPSS
0.0032
EPSS Percentile
55.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-416
Status
published
Products (3)
busybox/busybox
1.26.0 - 1.33.1
fedoraproject/fedora
33
fedoraproject/fedora
34
Published
Nov 15, 2021
Tracked Since
Feb 18, 2026