CVE-2021-25329 (GCVE-0-2021-25329)
Vulnerability from cvelistv5 – Published: 2021-03-01 12:00 – Updated: 2025-02-13 16:27
VLAI
EPSS
VEX
Title
Incomplete fix for CVE-2020-9484
Summary
The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to this issue.
Severity
7.0 (High)
CWE
- Remote code execution via session persistence
Assigner
References
17 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
Apache Tomcat 10 , < 10.0.0
(custom)
Affected: Apache Tomcat 9 , < 9.0.41 (custom) Affected: Apache Tomcat 8.5 , < 8.5.61 (custom) Affected: Apache Tomcat 7 , < 7.0.107 (custom) |
guessed |
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"value": "The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to this issue."
},
{
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"value": "La correcci\u00f3n para el CVE-2020-9484 estaba incompleta.\u0026#xa0;Cuando se usa Apache Tomcat versiones 10.0.0-M1 hasta 10.0.0, versiones 9.0.0.M1 hasta 9.0.41, versiones 8.5.0 hasta 8.5.61 o versiones 7.0.0.\u0026#xa0;hasta 7.0.107, con un caso de borde de configuraci\u00f3n que era muy poco probable que se usara, la instancia de Tomcat segu\u00eda siendo vulnerable a CVE-2020-9494.\u0026#xa0;Tome en cuenta que tanto los requisitos previos publicados anteriormente para CVE-2020-9484 como las mitigaciones publicadas anteriormente para CVE-2020-9484 tambi\u00e9n se aplican a este problema"
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},
{
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"tags": [
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"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00018.html"
},
{
"source": "security@apache.org",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202208-34"
},
{
"source": "security@apache.org",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20210409-0002/"
},
{
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"tags": [
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],
"url": "https://www.debian.org/security/2021/dsa-4891"
},
{
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],
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{
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},
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"url": "http://www.openwall.com/lists/oss-security/2021/03/01/2"
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"url": "https://lists.apache.org/thread.html/r11ce01e8a4c7269b88f88212f21830edf73558997ac7744f37769b77%40%3Cusers.tomcat.apache.org%3E"
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{
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{
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},
{
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],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-08-04T23:11:26+00:00",
"cve": "CVE-2021-25329",
"id": "CVE-2021-25329",
"initial_release_date": "2021-03-01T00:00:00+00:00",
"product_status:fixed": "49",
"product_status:known_affected": "33",
"product_status:known_not_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "tomcat: Incomplete fix for CVE-2020-9484 (RCE via session persistence)",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-25329.json",
"version": "3"
}
}
}
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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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