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CVE-2021-28831

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5179-2
Posted May 10, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5179-2 - USN-5179-1 fixed vulnerabilities in BusyBox. This update provides the corresponding updates for Ubuntu 16.04 ESM. It was discovered that BusyBox incorrectly handled certain malformed gzip archives. If a user or automated system were tricked into processing a specially crafted gzip archive, a remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-28831
SHA-256 | 231b7864903eb6b1665e3f9a4804563f329ddd5b6254aaf2ab3e503703c713d6
Ubuntu Security Notice USN-5179-1
Posted Dec 7, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5179-1 - It was discovered that BusyBox incorrectly handled certain malformed gzip archives. If a user or automated system were tricked into processing a specially crafted gzip archive, a remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly execute arbitrary code. It was discovered that BusyBox incorrectly handled certain malformed LZMA archives. If a user or automated system were tricked into processing a specially crafted LZMA archive, a remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly leak sensitive information. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-28831, CVE-2021-42374, CVE-2021-42380, CVE-2021-42382, CVE-2021-42384, CVE-2021-42385
SHA-256 | 79cb4e9baef6c0111d14c5407d557d10a3cc57baccdc288769485ee70c931402
Gentoo Linux Security Advisory 202105-09
Posted May 26, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202105-9 - A vulnerability in BusyBox might allow remote attackers to cause a Denial of Service condition. Versions less than 1.32.1 are affected.

tags | advisory, remote, denial of service
systems | linux, gentoo
advisories | CVE-2021-28831
SHA-256 | dbe7f816bded52d79d565e294549cbada5f460d9a78e96915acc68708df874bc
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