CVE-2021-28831
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Busybox
PublishedMar 19, 2021
First seenMar 19, 2021
Weakness typeCWE-755CWE-755
How to fix
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZASBW7QRRLY5V2R44MQ4QQM4CZIDHM2U/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7ZIFKPRR32ZYA3WAA2NXFA3QHHOU6FJ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UDQGJRECXFS5EZVDH2OI45FMO436AC4/
- security.gentoo.org/glsa/202105-09
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| busybox busybox | 1.32.0 ≤ v ≤ 1.32.1 | — |
| fedoraproject fedora | 32, 33, 34 | — |
| debian debian_linux | 9.0 | — |
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