CVE-2020-27782

{"containers": {"cna": {"affected": [{"product": "Undertow", "vendor": "n/a", "versions": [{"status": "affected", "version": "2.1.5.SP1"}, {"status": "affected", "version": "2.0.33.SP2"}, {"status": "affected", "version": "2.2.3.SP1"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "description": "CWE-400", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-02-23T18:35:52.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901304"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secalert@redhat.com", "ID": "CVE-2020-27782", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Undertow", "version": {"version_data": [{"version_value": "2.1.5.SP1"}, {"version_value": "2.0.33.SP2"}, {"version_value": "2.2.3.SP1"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-400"}]}]}, "references": {"reference_data": [{"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1901304", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901304"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T16:25:42.926Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901304"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2020-27782", "datePublished": "2021-02-23T18:35:52.000Z", "dateReserved": "2020-10-27T00:00:00.000Z", "dateUpdated": "2024-08-04T16:25:42.926Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Undertow", "vendor": "n/a", "versions": [{"status": "affected", "version": "2.1.5.SP1"}, {"status": "affected", "version": "2.0.33.SP2"}, {"status": "affected", "version": "2.2.3.SP1"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:jboss_fuse:6.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "A305F012-544E-4245-9D69-1C8CD37748B1", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:jboss_fuse:7.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "B40CCE4F-EA2C-453D-BB76-6388767E5C6D", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:openshift_application_runtimes:-:*:*:*:*:*:*:*", "matchCriteriaId": "A33441B3-B301-426C-A976-08CE5FE72EFB", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:undertow:2.0.33:sp2:*:*:*:*:*:*", "matchCriteriaId": "A2CDD487-FEA3-4471-B9F3-A2C24278DBF8", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:undertow:2.1.5:sp1:*:*:*:*:*:*", "matchCriteriaId": "914B537C-9326-49DB-BED4-38203821613D", "vulnerable": true}, {"criteria": "cpe:2.3:a:redhat:undertow:2.2.3:sp1:*:*:*:*:*:*", "matchCriteriaId": "0022DD37-7025-469C-B855-B38D516D2C9B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en el conector AJP de Undertow. Peticiones maliciosas y cierres de conexiones abruptas podr\u00edan ser desencadenadas por un atacante usando cadenas de consulta con caracteres que no cumplen con RFC, resultando en una denegaci\u00f3n de servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema. Esto afecta a Undertow versiones 2.1.5.SP1, 2.0.33.SP2 y 2.2.3.SP1"}], "id": "CVE-2020-27782", "lastModified": "2026-06-17T03:09:38.047", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.8, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-23T19:15:13.150", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901304"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901304"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

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"cpe": "cpe:/a:redhat:openshift_application_runtimes:1.0", "product_name": "Text-Only RHOAR", "release_date": "2021-02-08T00:00:00Z"}], "bugzilla": {"description": "undertow: special character in query results in server errors", "id": "1901304", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1901304"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-400", "details": ["A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.", "A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability."], "mitigation": {"lang": "en:us", "value": "The issue can be mitigated by using HTTP/1.1 instead of AJP to proxy to the back-end."}, "name": "CVE-2020-27782", "package_state": [{"cpe": "cpe:/a:redhat:openshift_application_runtimes:1.0", "fix_state": "Not affected", "package_name": "undertow", "product_name": "Red Hat build of Quarkus"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_brms_platform:7", "fix_state": "Not affected", "package_name": "undertow", "product_name": "Red Hat Decision Manager 7"}, {"cpe": "cpe:/a:redhat:integration:1", "fix_state": "Affected", "impact": "low", "package_name": "undertow", "product_name": "Red Hat Integration Camel K 1"}, {"cpe": "cpe:/a:redhat:integration:1", "fix_state": "Not affected", "package_name": "undertow", "product_name": "Red Hat Integration Service Registry"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:7", "fix_state": "Out of support scope", "impact": "low", "package_name": "undertow", "product_name": "Red Hat JBoss Data Grid 7"}, {"cpe": "cpe:/a:redhat:jboss_fuse:6", "fix_state": "Affected", "impact": "low", "package_name": "undertow", "product_name": "Red Hat JBoss Fuse 6"}, {"cpe": "cpe:/a:redhat:openshift_application_runtimes:1.0", "fix_state": "Affected", "package_name": "undertow", "product_name": "Red Hat OpenShift Application Runtimes"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Will not fix", "impact": "moderate", "package_name": "opendaylight", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_bpms_platform:7", "fix_state": "Not affected", "package_name": "undertow", "product_name": "Red Hat Process Automation 7"}, {"cpe": "cpe:/a:redhat:openshift_application_runtimes:1.0", "fix_state": "Affected", "impact": "low", "package_name": "undertow", "product_name": "Red Hat support for Spring Boot"}], "public_date": "2021-01-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-27782\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-27782"], "threat_severity": "Important"}

{}