CVE-2020-36226 (GCVE-0-2020-36226)
Vulnerability from cvelistv5 – Published: 2021-01-25 09:44 – Updated: 2024-08-04 17:23
VLAI
EPSS
VEX
Summary
A flaw was discovered in OpenLDAP before 2.4.57 leading to a memch->bv_len miscalculation and slapd crash in the saslAuthzTo processing, resulting in denial of service.
Severity
7.5 (High)
CWE
- n/a
Assigner
References
18 references
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"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20210226-0002/"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://support.apple.com/kb/HT212529"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://support.apple.com/kb/HT212530"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://support.apple.com/kb/HT212531"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://www.debian.org/security/2021/dsa-4845"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"Third Party Advisory"
],
"url": "http://seclists.org/fulldisclosure/2021/May/64"
},
{
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"tags": [
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],
"url": "http://seclists.org/fulldisclosure/2021/May/65"
},
{
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"tags": [
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],
"url": "http://seclists.org/fulldisclosure/2021/May/70"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugs.openldap.org/show_bug.cgi?id=9413"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
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],
"url": "https://git.openldap.org/openldap/openldap/-/commit/554dff1927176579d652f2fe60c90e9abbad4c65"
},
{
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],
"url": "https://git.openldap.org/openldap/openldap/-/commit/5a2017d4e61a6ddc4dcb4415028e0d08eb6bca26"
},
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],
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},
{
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],
"url": "https://git.openldap.org/openldap/openldap/-/commit/d169e7958a3e0dc70f59c8374bf8a59833b7bdd8"
},
{
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],
"url": "https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E"
},
{
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},
{
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},
{
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"tags": [
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"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://security.netapp.com/advisory/ntap-20210226-0002/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://support.apple.com/kb/HT212529"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://support.apple.com/kb/HT212530"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "https://support.apple.com/kb/HT212531"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.debian.org/security/2021/dsa-4845"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T16:13:05+00:00",
"cve": "CVE-2020-36226",
"id": "CVE-2020-36226",
"initial_release_date": "2020-01-01T00:00:00+00:00",
"product_status:known_affected": "14",
"product_status:known_not_affected": "9",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "openldap: Denial of service via length miscalculation in slap_parse_user",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-36226.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-08-31T02:13:28Z",
"cve": "CVE-2020-36226",
"id": "CVE-2020-36226",
"initial_release_date": "2023-02-15T03:50:53Z",
"product_status:known_affected": "298",
"product_status:recommended": "842",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-36226",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-36226.json",
"version": "34"
}
}
}
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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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