Arch Linux Security Advisory ASA-202103-11
=========================================
Severity: Low
Date    : 2021-03-25
CVE-ID  : CVE-2021-28831
Package : mkinitcpio-busybox
Type    : denial of service
Remote  : No
Link    : https://security.archlinux.org/AVG-1708

Summary
======
The package mkinitcpio-busybox before version 1.32.1-3 is vulnerable to
denial of service.

Resolution
=========
Upgrade to 1.32.1-3.

# pacman -Syu "mkinitcpio-busybox>=1.32.1-3"

The problem has been fixed upstream but no release is available yet.

Workaround
=========
None.

Description
==========
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.

Impact
=====
A local attacker is able to provide a crafted zip file to crash the
application.

References
=========
https://bugs.archlinux.org/task/70075
https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd
https://security.archlinux.org/CVE-2021-28831

ArchLinux: 202103-11: mkinitcpio-busybox: denial of service

March 26, 2021

Summary

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.

Resolution

Upgrade to 1.32.1-3. # pacman -Syu "mkinitcpio-busybox>=1.32.1-3"
The problem has been fixed upstream but no release is available yet.

References

https://bugs.archlinux.org/task/70075 https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd https://security.archlinux.org/CVE-2021-28831

Severity
Package : mkinitcpio-busybox
Type : denial of service
Remote : No
Link : https://security.archlinux.org/AVG-1708

Workaround

None.

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