Name: CVE-2021-28831: Improper Handling of Exceptional Conditions
Creator: Rapid7
Published: 2021-03-19T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-28831, CWE-755, CVSS 7.5, EPSS 0.02719

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.

CVSS Details

CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade busybox	Jun 17, 2022	Mar 19, 2021
Amazon_linux	—	Upgrade busybox	May 11, 2021	Mar 19, 2021
Arch Linux	—	Upgrade to the latest version of Arch Linux	Jul 11, 2025	Mar 19, 2021
Debian	—	Upgrade busybox	Apr 5, 2021	Mar 19, 2021
Gentoo Linux	—	Upgrade sys-apps/busybox.	May 28, 2021	Mar 19, 2021
Huawei Euleros 2_0_sp9	—	Upgrade busybox-help	Sep 29, 2021	Mar 19, 2021
Suse	—	Upgrade busybox-testsuiteUpgrade busybox-staticUpgrade busybox-warewulf3Upgrade busybox	Oct 28, 2021	Mar 19, 2021
Ubuntu	—	Upgrade busybox (Ubuntu Pro)Upgrade busybox-initramfs (Ubuntu Pro)Upgrade busybox-staticUpgrade busybox-initramfsUpgrade busyboxUpgrade busybox-static (Ubuntu Pro)	Dec 8, 2021	Mar 19, 2021

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CVSS Details

Covered by Rapid7

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