CVE-2021-42376
Published: 15 November 2021
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.
Notes
Author | Note |
---|---|
mdeslaur | hush is not build in Ubuntu packages. |
Priority
Status
Package | Release | Status |
---|---|---|
busybox Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not compiled)
|
focal |
Not vulnerable
(code not compiled)
|
|
hirsute |
Not vulnerable
(code not compiled)
|
|
impish |
Not vulnerable
(code not compiled)
|
|
jammy |
Not vulnerable
(code not compiled)
|
|
upstream |
Released
(1.34.0)
|
|
trusty |
Not vulnerable
(code not compiled)
|
|
xenial |
Not vulnerable
(code not compiled)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |