CVE-2020-36475 (GCVE-0-2020-36475)
Vulnerability from cvelistv5 – Published: 2021-08-23 00:00 – Updated: 2024-08-04 17:30
VLAI
EPSS
VEX
Summary
An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). The calculations performed by mbedtls_mpi_exp_mod are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie-Hellman key pairs.
Severity
7.5 (High)
CWE
- n/a
Assigner
References
6 references
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"source": "Microsoft CSAF VEX",
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"redhat_vex": {
"current_release_date": "2025-11-21T16:01:59+00:00",
"cve": "CVE-2020-36475",
"id": "CVE-2020-36475",
"initial_release_date": "2020-09-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "mbedtls: TLS denial of service vulnerability",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-36475.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2025-02-17T06:05:00Z",
"cve": "CVE-2020-36475",
"id": "CVE-2020-36475",
"initial_release_date": "2023-02-15T03:50:39Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-36475",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-36475.json",
"version": "5"
}
}
}
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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.
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