CVE-2021-28831
Published: August 31, 2023Last modified: August 31, 2023
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | busybox | Not affected (1.35.0-r30) |
| Stream | busybox | Not affected (1.36.1-r6) |
References
- https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd
- https://lists.debian.org/debian-lts-announce/2021/04/msg00001.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UDQGJRECXFS5EZVDH2OI45FMO436AC4/
- 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/ZASBW7QRRLY5V2R44MQ4QQM4CZIDHM2U/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/3UDQGJRECXFS5EZVDH2OI45FMO436AC4/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7ZIFKPRR32ZYA3WAA2NXFA3QHHOU6FJ/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZASBW7QRRLY5V2R44MQ4QQM4CZIDHM2U/
- https://security.gentoo.org/glsa/202105-09