CVE-2021-44142 (GCVE-0-2021-44142)
Vulnerability from cvelistv5 – Published: 2022-02-21 14:30 – Updated: 2025-04-23 19:02
VLAI
EPSS
VEX
Summary
The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:30 UTC
Assigner
References
6 references
Impacted products
Date Public
2022-01-31 00:00
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"id": "CVE-2021-44142",
"lastModified": "2024-11-21T06:30:25.637",
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"published": "2022-02-21T15:15:07.380",
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"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"secalert@redhat.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-125\"}, {\"lang\": \"en\", \"value\": \"CWE-787\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-125\"}, {\"lang\": \"en\", \"value\": \"CWE-787\"}]}]"
},
"microsoft_vex": {
"current_release_date": "2024-10-15T00:00:00.000Z",
"cve": "CVE-2021-44142",
"id": "msrc_CVE-2021-44142",
"initial_release_date": "2022-02-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "The Samba vfs_fruit module uses extended file attributes (EA xattr) to provide \"...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver.\" Samba versions prior to 4.13.17 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd typically root.",
"url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2021-44142.json",
"version": "1"
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"current_release_date": "2026-08-07T01:08:19+00:00",
"cve": "CVE-2021-44142",
"id": "CVE-2021-44142",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:fixed": "1694",
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"status": "final",
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},
"suse_vex": {
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"current_release_date": "2026-08-22T02:16:41Z",
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"initial_release_date": "2023-02-15T03:36:41Z",
"product_status:known_affected": "575",
"product_status:known_not_affected": "65",
"product_status:recommended": "4095",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-44142",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-44142.json",
"version": "46"
},
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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