Vulnerabilities > CVE-2021-28831 - Improper Handling of Exceptional Conditions vulnerability in multiple products

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

NVD

Published: 2021-03-19

Updated: 2023-11-07

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.

Vulnerable Configurations

Part	Description	Count
Application	Busybox Busybox Busybox 1.32.0 Busybox Busybox 1.32.1	2
OS	Fedoraproject Fedoraproject Fedora 32 Fedoraproject Fedora 33 Fedoraproject Fedora 34	3
OS	Debian Debian Debian Linux 9.0	1

Common Weakness Enumeration (CWE)

CWE-755 - Improper Handling of Exceptional Conditions

References

https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd
https://lists.debian.org/debian-lts-announce/2021/04/msg00001.html
https://security.gentoo.org/glsa/202105-09
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZASBW7QRRLY5V2R44MQ4QQM4CZIDHM2U/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7ZIFKPRR32ZYA3WAA2NXFA3QHHOU6FJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UDQGJRECXFS5EZVDH2OI45FMO436AC4/