CVE-2021-28831
Published: 19 March 2021
decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.
Priority
Status
Package | Release | Status |
---|---|---|
busybox
Launchpad, Ubuntu, Debian |
bionic |
Released
(1:1.27.2-2ubuntu3.4)
|
focal |
Released
(1:1.30.1-4ubuntu6.4)
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Released
(1:1.30.1-6ubuntu2.1)
|
|
impish |
Released
(1:1.30.1-6ubuntu3.1)
|
|
jammy |
Released
(1:1.30.1-7ubuntu2)
|
|
kinetic |
Released
(1:1.30.1-7ubuntu2)
|
|
lunar |
Released
(1:1.30.1-7ubuntu2)
|
|
trusty |
Released
(1:1.21.0-1ubuntu1.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(1.33.1, 1.34.0)
|
|
xenial |
Released
(1:1.22.0-15ubuntu1.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
Patches:
upstream: https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |