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CVE-2021-42374

UNKNOWN
Published 2021-11-15T00:00:00.000Z
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CVSS Score

V3.1
5.3
/10
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.238
Higher than 23.8% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
LOW
Integrity
NONE
Availability
HIGH

Description

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

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

busybox

busybox

Affected Versions:

unspecified

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed CRITICAL

GHSA-6f92-r9cq-v6cq

Advisory Details

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

CVSS Scoring

CVSS Score

9.0

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-42374
WEB https://claroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovered-by-claroty-jfrog
WEB https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS
WEB https://security.netapp.com/advisory/ntap-20211223-0002

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: May 5, 2025

References

https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
https://security.netapp.com/advisory/ntap-20211223-0002/
https://claroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovered-by-claroty-jfrog
Published: 2021-11-15T00:00:00.000Z
Last Modified: 2025-05-05T16:46:16.227Z
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