PT-2021-23603 · Busybox+3 · Busybox+3

Published 2021-11-09 · Updated 2025-04-30 · CVE-2021-42373

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Busybox (affected versions not specified)

Description A NULL pointer dereference in Busybox's man applet leads to denial of service when a section name is supplied but no page argument is given.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2025-05992

CVE-2021-42373

OPENSUSE-SU-2022:0135-1

OPENSUSE-SU-2022_0135-1

OPENSUSE-SU-2022_3959-1

OPENSUSE-SU-2024:11738-1

SUSE-SU-2022:0135-1

SUSE-SU-2022:0135-2

SUSE-SU-2022:3959-1

SUSE-SU-2022:4253-1

Affected Products

Busybox

Debian

Red Os

Suse

References · 77

• https://osv.dev/vulnerability/openSUSE-SU-2024:11738-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3959-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:4253-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-42373 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42373 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2022:0135-2 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-42373 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-42373 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-05992 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2022:0135-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-42373 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-42373 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2021-42373 · Vendor Advisory