CVE-2021-42376
MEDIUMBusybox 1.16.0-1.34.0 - Denial of Service via Hush Applet NULL Pointer Dereference
Title source: llmDescription
A NULL pointer dereference in Busybox's hush applet leads to denial of service when processing a crafted shell command, due to missing validation after a \x03 delimiter character. This may be used for DoS under very rare conditions of filtered command input.
References (5)
Core 5
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/
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
5.5
EPSS
0.0004
EPSS Percentile
14.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (13)
busybox/busybox
1.16.0 - 1.34.0
fedoraproject/fedora
33
fedoraproject/fedora
34
netapp/cloud_backup
netapp/h300e_firmware
netapp/h300s_firmware
netapp/h410s_firmware
netapp/h500e_firmware
netapp/h500s_firmware
netapp/h700e_firmware
... and 3 more
Published
Nov 15, 2021
Tracked Since
Feb 18, 2026