CVE-2018-6332 - Vulnerability Details - OpenCVE

A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 settings which can cause the server to spend disproportionate resources. This affects all supported versions of HHVM (3.24.3 and 3.21.7 and below) when using the proxygen server to handle HTTP2 requests.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00439.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Facebook	Hhvm

Configuration 1 [-]

OR	cpe:2.3:a:facebook:hhvm::::::::
	cpe:2.3:a:facebook:hhvm:3.24.3:::::::*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2018-18093	A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 settings which can cause the server to spend disproportionate resources. This affects all supported versions of HHVM (3.24.3 and 3.21.7 and below) when using the proxygen server to handle HTTP2 requests.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://hhvm.com/blog/2018/03/15/hhvm-3.25.html

History

Tue, 06 May 2025 19:15:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: facebook

Published: 2018-12-03T14:00:00.000Z

Updated: 2025-05-06T19:01:27.181Z

Reserved: 2018-01-26T00:00:00.000Z

Link: CVE-2018-6332

Vulnrichment

Updated: 2024-08-05T06:01:48.547Z

NVD

Status : Modified

Published: 2018-12-03T14:29:00.457

Modified: 2025-05-06T19:15:53.553

Link: CVE-2018-6332

Redhat

No data.

OpenCVE Enrichment

No data.

{"containers": {"cna": {"affected": [{"product": "HHVM", "vendor": "Facebook", "versions": [{"status": "affected", "version": "3.24.4"}, {"lessThan": "unspecified", "status": "affected", "version": "3.22.0", "versionType": "custom"}, {"status": "affected", "version": "3.21.8"}, {"lessThan": "3.21.8", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "dateAssigned": "2018-03-15T00:00:00.000Z", "datePublic": "2018-12-03T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 settings which can cause the server to spend disproportionate resources. This affects all supported versions of HHVM (3.24.3 and 3.21.7 and below) when using the proxygen server to handle HTTP2 requests."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "description": "Denial of Service (CWE-400)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2018-12-03T13:57:01.000Z", "orgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "shortName": "facebook"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve-assign@fb.com", "DATE_ASSIGNED": "2018-03-15", "ID": "CVE-2018-6332", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "HHVM", "version": {"version_data": [{"version_affected": "!=>", "version_value": "3.24.4"}, {"version_affected": ">=", "version_value": "3.22.0"}, {"version_affected": "!=>", "version_value": "3.21.8"}, {"version_affected": "<", "version_value": "3.21.8"}]}}]}, "vendor_name": "Facebook"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 settings which can cause the server to spend disproportionate resources. This affects all supported versions of HHVM (3.24.3 and 3.21.7 and below) when using the proxygen server to handle HTTP2 requests."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Denial of Service (CWE-400)"}]}]}, "references": {"reference_data": [{"name": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html", "refsource": "MISC", "url": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T06:01:48.547Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html"}]}, {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2025-05-06T19:01:10.412112Z", "id": "CVE-2018-6332", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-06T19:01:27.181Z"}}]}, "cveMetadata": {"assignerOrgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "assignerShortName": "facebook", "cveId": "CVE-2018-6332", "datePublished": "2018-12-03T14:00:00.000Z", "dateReserved": "2018-01-26T00:00:00.000Z", "dateUpdated": "2025-05-06T19:01:27.181Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html", "tags": ["x_refsource_MISC", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T06:01:48.547Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2018-6332", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-05-06T19:01:10.412112Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-06T19:01:19.256Z"}}], "cna": {"affected": [{"vendor": "Facebook", "product": "HHVM", "versions": [{"status": "affected", "version": "3.24.4"}, {"status": "affected", "version": "3.22.0", "lessThan": "unspecified", "versionType": "custom"}, {"status": "affected", "version": "3.21.8"}, {"status": "affected", "version": "unspecified", "lessThan": "3.21.8", "versionType": "custom"}]}], "datePublic": "2018-12-03T00:00:00.000Z", "references": [{"url": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html", "tags": ["x_refsource_MISC"]}], "dateAssigned": "2018-03-15T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 settings which can cause the server to spend disproportionate resources. This affects all supported versions of HHVM (3.24.3 and 3.21.7 and below) when using the proxygen server to handle HTTP2 requests."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "Denial of Service (CWE-400)"}]}], "providerMetadata": {"orgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "shortName": "facebook", "dateUpdated": "2018-12-03T13:57:01.000Z"}, "x_legacyV4Record": {"affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"version": {"version_data": [{"version_value": "3.24.4", "version_affected": "!=>"}, {"version_value": "3.22.0", "version_affected": ">="}, {"version_value": "3.21.8", "version_affected": "!=>"}, {"version_value": "3.21.8", "version_affected": "<"}]}, "product_name": "HHVM"}]}, "vendor_name": "Facebook"}]}}, "data_type": "CVE", "references": {"reference_data": [{"url": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html", "name": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html", "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "eng", "value": "A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 settings which can cause the server to spend disproportionate resources. This affects all supported versions of HHVM (3.24.3 and 3.21.7 and below) when using the proxygen server to handle HTTP2 requests."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Denial of Service (CWE-400)"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2018-6332", "STATE": "PUBLIC", "ASSIGNER": "cve-assign@fb.com", "DATE_ASSIGNED": "2018-03-15"}}}}, "cveMetadata": {"cveId": "CVE-2018-6332", "state": "PUBLISHED", "dateUpdated": "2025-05-06T19:01:27.181Z", "dateReserved": "2018-01-26T00:00:00.000Z", "assignerOrgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "datePublished": "2018-12-03T14:00:00.000Z", "assignerShortName": "facebook"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*", "matchCriteriaId": "D1EF1502-F93C-4399-8FB9-2C1DE48095D8", "versionEndIncluding": "3.21.7", "vulnerable": true}, {"criteria": "cpe:2.3:a:facebook:hhvm:3.24.3:*:*:*:*:*:*:*", "matchCriteriaId": "0CAF9519-6DC4-4028-BF5B-BF06D3467150", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 settings which can cause the server to spend disproportionate resources. This affects all supported versions of HHVM (3.24.3 and 3.21.7 and below) when using the proxygen server to handle HTTP2 requests."}, {"lang": "es", "value": "Un problema de denegaci\u00f3n de servicio (DoS) potencial en la gesti\u00f3n de Proxygen de configuraciones HTTP2 no v\u00e1lidas puede provocar que el servidor emplee una cantidad desproporcionada de recursos. Esto afecta a todas las versiones soportadas de HHVM (3.24.3 y 3.21.7 y anteriores) cuando se utiliza el servidor proxygen para gestionar peticiones HTTP2."}], "id": "CVE-2018-6332", "lastModified": "2025-05-06T19:15:53.553", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2018-12-03T14:29:00.457", "references": [{"source": "cve-assign@fb.com", "tags": ["Vendor Advisory"], "url": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://hhvm.com/blog/2018/03/15/hhvm-3.25.html"}], "sourceIdentifier": "cve-assign@fb.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "cve-assign@fb.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-19"}], "source": "nvd@nist.gov", "type": "Primary"}]}