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