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

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4019-1 busybox security update
EUVD EUVD EUVD-2021-29345 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
Ubuntu USN Ubuntu USN USN-5179-1 BusyBox vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 03 Nov 2025 21:30:00 +0000

Type Values Removed Values Added
References

Mon, 05 May 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: JFROG

Published:

Updated: 2025-11-03T20:34:04.163Z

Reserved: 2021-10-14T00:00:00.000Z

Link: CVE-2021-42374

cve-icon Vulnrichment

Updated: 2025-11-03T20:34:04.163Z

cve-icon NVD

Status : Modified

Published: 2021-11-15T21:15:07.540

Modified: 2025-11-03T21:15:43.853

Link: CVE-2021-42374

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-11-09T00:00:00Z

Links: CVE-2021-42374 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses