CVE-2021-42377
Published: 15 November 2021
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.
Notes
Author | Note |
---|---|
mdeslaur | 1.33.0+ |
Priority
Status
Package | Release | Status |
---|---|---|
busybox Launchpad, Ubuntu, Debian |
hirsute |
Not vulnerable
(1:1.30.1-6ubuntu2)
|
impish |
Not vulnerable
(1:1.30.1-6ubuntu3)
|
|
jammy |
Not vulnerable
(1:1.30.1-6ubuntu3)
|
|
trusty |
Not vulnerable
|
|
upstream |
Released
(1.34.0)
|
|
xenial |
Not vulnerable
|
|
bionic |
Not vulnerable
(1:1.27.2-2ubuntu3.3)
|
|
focal |
Not vulnerable
(1:1.30.1-4ubuntu6.3)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |