CVE-2021-42377

Critical

Description

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.

SeverityCritical
CVSS9.8
Exploit probability—
ProductBusybox
PublishedNov 15, 2021
First seenNov 15, 2021
Weakness typeCWE-590CWE-590

How to fix

Affected products

ProductAffected versionsFixed in
busybox busybox1.33.0, 1.33.1—
fedoraproject fedora33, 34—
netapp cloud_backupNo range specified—
netapp hci_management_nodeNo range specified—
netapp solidfireNo range specified—
netapp h300s_firmwareNo range specified—
netapp h500s_firmwareNo range specified—
netapp h700s_firmwareNo range specified—
netapp h300e_firmwareNo range specified—
netapp h500e_firmwareNo range specified—
netapp h700e_firmwareNo range specified—
netapp h410s_firmwareNo range specified—

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