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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"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-04-23T13:30:59.386639Z",
"version": "2.0.3"
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"type": "ssvc"
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}
],
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"dateUpdated": "2025-04-23T15:20:36.456Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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],
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"affected": [
{
"product": "Samba",
"vendor": "Samba",
"versions": [
{
"lessThan": "4.13.17",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "4.14.12",
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{
"lessThan": "4.15.5",
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}
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"type": "CWE"
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]
},
{
"descriptions": [
{
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"description": "CWE-787 Out-of-bounds Write",
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}
],
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"references": [
{
"url": "https://www.samba.org/samba/security/CVE-2021-44142.html"
},
{
"url": "https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin"
},
{
"tags": [
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],
"url": "https://kb.cert.org/vuls/id/119678"
},
{
"url": "https://bugzilla.samba.org/show_bug.cgi?id=14914"
},
{
"name": "GLSA-202309-06",
"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202309-06"
}
],
"source": {
"discovery": "UNKNOWN"
},
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},
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"cveId": "CVE-2021-44142",
"datePublished": "2022-02-21T14:30:12.659Z",
"dateReserved": "2021-11-22T00:00:00.000Z",
"dateUpdated": "2025-04-23T19:02:19.767Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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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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