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CVE-2021-42374

Status Candidate

Overview

An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that

Related Files

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
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