CVE-2021-27807 (GCVE-0-2021-27807)
Vulnerability from cvelistv5 – Published: 2021-03-19 16:05 – Updated: 2025-02-13 16:27
VLAI
EPSS
VEX
Title
A carefully crafted PDF file can trigger an infinite loop while loading the file
Summary
A carefully crafted PDF file can trigger an infinite loop while loading the file. This issue affects Apache PDFBox version 2.0.22 and prior 2.0.x versions.
Severity
5.5 (Medium)
CWE
- CWE-834 - Excessive Iteration
Assigner
References
21 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache Software Foundation | Apache PDFBox |
Affected:
Apache PDFBox , ≤ 2.0.22
(custom)
|
guessed |
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{
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"value": "A carefully crafted PDF file can trigger an infinite loop while loading the file. This issue affects Apache PDFBox version 2.0.22 and prior 2.0.x versions."
},
{
"lang": "es",
"value": "Un archivo PDF cuidadosamente dise\u00f1ado puede desencadenar un bucle infinito mientras se carga el archivo.\u0026#xa0;Este problema afecta a Apache PDFBox versi\u00f3n 2.0.22 y versiones anteriores 2.0.x"
}
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"id": "CVE-2021-27807",
"lastModified": "2024-11-21T05:58:36.030",
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"published": "2021-03-19T16:15:13.013",
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{
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"value": "Un archivo PDF cuidadosamente dise\u00f1ado puede desencadenar un bucle infinito mientras se carga el archivo.\u0026#xa0;Este problema afecta a Apache PDFBox versi\u00f3n 2.0.22 y versiones anteriores 2.0.x"
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{
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],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
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"value": "CWE-834"
}
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"source": "security@apache.org",
"type": "Secondary"
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{
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{
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"value": "CWE-834"
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},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-01-13T21:51:40+00:00",
"cve": "CVE-2021-27807",
"id": "CVE-2021-27807",
"initial_release_date": "2021-03-19T00:00:00+00:00",
"product_status:fixed": "2",
"product_status:known_affected": "6",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "pdfbox: infinite loop while loading a crafted PDF file",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-27807.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-01T01:39:37Z",
"cve": "CVE-2021-27807",
"id": "CVE-2021-27807",
"initial_release_date": "2023-02-15T03:44:23Z",
"product_status:known_not_affected": "26",
"product_status:recommended": "44",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-27807",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-27807.json",
"version": "16"
}
}
}
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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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