An out-of-bounds heap read in unlzma leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that internally supports LZMA compression.
Read more: "Unboxing Busybox: 14 Vulnerabilities Uncovered by Claroty, JFrog"
CVE-2021-42374
Busybox
Linux Utilities
6.5
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