CVE-2021-42374

At a glance

Severity
MEDIUM 5.3
EPSS
EPSS 0.62 % · percentile 50 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
JFROG
NVD status
Modified

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

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:HCISA-ADP
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:HNVD · nvd@nist.gov (Primary)
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0LOW 3.3AV:L/AC:M/Au:N/C:P/I:N/A:PNVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
busybox · busyboxaffected unspecified < 1.34.0

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD