CVE-2021-4091 (GCVE-0-2021-4091)
Vulnerability from cvelistv5 – Published: 2022-02-18 00:00 – Updated: 2025-11-03 20:33
VLAI
EPSS
VEX
Summary
A double-free was found in the way 389-ds-base handles virtual attributes context in persistent searches. An attacker could send a series of search requests, forcing the server to behave unexpectedly, and crash.
Severity
7.5 (High)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | 389-ds-base |
Affected:
389-ds-base-1.3.10.2
|
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"lastModified": "2024-11-21T06:36:53.033",
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"cve": "CVE-2021-4091",
"id": "CVE-2021-4091",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:fixed": "223",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "389-ds-base: double free of the virtual attribute context in persistent search",
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"version": "3"
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"current_release_date": "2026-08-31T02:09:56Z",
"cve": "CVE-2021-4091",
"id": "CVE-2021-4091",
"initial_release_date": "2023-02-15T03:48:01Z",
"product_status:recommended": "194",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-4091",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-4091.json",
"version": "18"
}
}
}
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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.
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.
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