critical
9.8
CWE
763 590
Advisory Published
Updated

CVE-2021-42377

First published: Mon Nov 15 2021(Updated: )

An 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.

Credit: reefs@jfrog.com reefs@jfrog.com

Affected SoftwareAffected VersionHow to fix
BusyBox=1.33.0
BusyBox=1.33.1
Red Hat Fedora=33
Red Hat Fedora=34
NetApp Cloud Backup
NetApp SolidFire & HCI Management Node
NetApp SolidFire & HCI Storage Node
All of
NetApp H300S Firmware
NetApp H300S Firmware
All of
NetApp H500e Firmware
NetApp H500e Firmware
All of
NetApp H700S
NetApp H700S
All of
NetApp H300E
NetApp H300E Firmware
All of
NetApp H500S Firmware
NetApp H500e Firmware
All of
NetApp H700E
NetApp H700E
All of
NetApp H410S
NetApp H410S Firmware
NetApp H300S Firmware
NetApp H300S Firmware
NetApp H500e Firmware
NetApp H500e Firmware
NetApp H700S
NetApp H700S
NetApp H300E
NetApp H300E Firmware
NetApp H500S Firmware
NetApp H500e Firmware
NetApp H700E
NetApp H700E
NetApp H410S
NetApp H410S Firmware

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-42377?

    CVE-2021-42377 is a vulnerability in Busybox's hush applet that can lead to denial of service and possible code execution.

  • Which software versions are affected by CVE-2021-42377?

    CVE-2021-42377 affects Busybox version 1.33.0 and 1.33.1, as well as Fedora versions 33 and 34.

  • What is the severity of CVE-2021-42377?

    CVE-2021-42377 has a severity score of 9.8 (critical).

  • How can CVE-2021-42377 be exploited?

    CVE-2021-42377 can be exploited by an attacker sending a crafted shell command containing the &&& string.

  • Are there any fixes or patches available for CVE-2021-42377?

    Yes, patches and fixes are available for CVE-2021-42377. It is recommended to update to a patched version of Busybox or the affected software.

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