CVE-2012-4557 (GCVE-0-2012-4557)
Vulnerability from cvelistv5 – Published: 2012-11-30 19:00 – Updated: 2024-08-06 20:42
VLAI
EPSS
VEX
Summary
The mod_proxy_ajp module in the Apache HTTP Server 2.2.12 through 2.2.21 places a worker node into an error state upon detection of a long request-processing time, which allows remote attackers to cause a denial of service (worker consumption) via an expensive request.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
23 references
Date Public
2012-01-04 00:00
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"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2012-4557",
"datePublished": "2012-11-30T19:00:00.000Z",
"dateReserved": "2012-08-21T00:00:00.000Z",
"dateUpdated": "2024-08-06T20:42:54.760Z",
"state": "PUBLISHED"
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"cve": "CVE-2012-4557",
"date": "2026-09-16",
"epss": "0.1747",
"percentile": "0.96973"
},
"fkie_nvd": {
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"descriptions": "[{\"lang\": \"en\", \"value\": \"The mod_proxy_ajp module in the Apache HTTP Server 2.2.12 through 2.2.21 places a worker node into an error state upon detection of a long request-processing time, which allows remote attackers to cause a denial of service (worker consumption) via an expensive request.\"}, {\"lang\": \"es\", \"value\": \"El m\\u00f3dulo mod_proxy_ajp en el Servidor HTTP Apache v2.2.12 por v2.2.21 coloca un nodo de trabajo en un estado de error ante la detecci\\u00f3n de un tiempo de procesamiento de solicitudes demasiado elevado, lo que permite a atacantes remotos provocar una denegaci\\u00f3n de servicio (consumo de nodos de trabajo) a trav\\u00e9s de un solicitud compleja.\\r\\n\"}]",
"id": "CVE-2012-4557",
"lastModified": "2024-11-21T01:43:07.847",
"metrics": "{\"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:N/I:N/A:P\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
"published": "2012-11-30T19:55:01.050",
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"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-399\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2012-4557\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2012-11-30T19:55:01.050\",\"lastModified\":\"2026-04-29T01:13:23.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The mod_proxy_ajp module in the Apache HTTP Server 2.2.12 through 2.2.21 places a worker node into an error state upon detection of a long request-processing time, which allows remote attackers to cause a denial of service (worker consumption) via an expensive request.\"},{\"lang\":\"es\",\"value\":\"El m\u00f3dulo mod_proxy_ajp en el Servidor HTTP Apache v2.2.12 por v2.2.21 coloca un nodo de trabajo en un estado de error ante la detecci\u00f3n de un tiempo de procesamiento de solicitudes demasiado elevado, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de nodos de trabajo) a trav\u00e9s de un solicitud compleja.\\r\\n\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-399\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.12:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"02B629FB-88C8-4E85-A137-28770F1E524E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.13:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"03550EF0-DF89-42FE-BF0E-994514EBD947\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.14:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4886CCAB-6D4E-45C7-B177-2E8DBEA15531\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.15:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C35631AC-7C35-4F6A-A95A-3B080E5210ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.16:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6CED2BA6-BE5E-4EF1-88EB-0DADD23D2EEF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.17:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A71F4154-AD20-4EEA-9E2E-D3385C357DA5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.18:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B0B8C9DB-401E-42B3-BAED-D09A96DE9A90\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.19:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"062C20A0-05A0-4164-8330-DF6ADFE607F4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.20:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D345BA35-93BB-406F-B5DC-86E49FB29C22\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.2.21:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7ED4892F-C829-4BEA-AB82-6A78F6F2426D\"}]}]}],\"references\":[{\"url\":\"http://httpd.apache.org/security/vulnerabilities_22.html#2.2.22\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Vendor 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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-08-04T23:17:46+00:00",
"cve": "CVE-2012-4557",
"id": "CVE-2012-4557",
"initial_release_date": "2012-01-04T00:00:00+00:00",
"product_status:fixed": "769",
"product_status:known_not_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "httpd: mod_proxy_ajp worker moved to error state when timeout exceeded",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2012/cve-2012-4557.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "low",
"current_release_date": "2026-08-27T02:07:54Z",
"cve": "CVE-2012-4557",
"id": "CVE-2012-4557",
"initial_release_date": "2023-02-15T05:44:30Z",
"product_status:recommended": "86",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2012-4557",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2012-4557.json",
"version": "9"
}
}
}
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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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