CVE-2019-20637

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in Varnish Cache before 6.0.5 LTS, 6.1.x and 6.2.x before 6.2.2, and 6.3.x before 6.3.1. It does not clear a pointer between the handling of one client request and the next request within the same connection. This sometimes causes information to be disclosed from the connection workspace, such as data structures associated with previous requests within this connection or VCL-related temporary headers."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-06-16T15:06:12.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "http://varnish-cache.org/security/VSV00004.html#vsv00004"}, {"name": "openSUSE-SU-2020:0819", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00031.html"}, {"name": "openSUSE-SU-2020:0808", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00026.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2019-20637", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "An issue was discovered in Varnish Cache before 6.0.5 LTS, 6.1.x and 6.2.x before 6.2.2, and 6.3.x before 6.3.1. It does not clear a pointer between the handling of one client request and the next request within the same connection. This sometimes causes information to be disclosed from the connection workspace, such as data structures associated with previous requests within this connection or VCL-related temporary headers."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "http://varnish-cache.org/security/VSV00004.html#vsv00004", "refsource": "MISC", "url": "http://varnish-cache.org/security/VSV00004.html#vsv00004"}, {"name": "openSUSE-SU-2020:0819", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00031.html"}, {"name": "openSUSE-SU-2020:0808", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00026.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T02:46:10.452Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://varnish-cache.org/security/VSV00004.html#vsv00004"}, {"name": "openSUSE-SU-2020:0819", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00031.html"}, {"name": "openSUSE-SU-2020:0808", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00026.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2019-20637", "datePublished": "2020-04-08T23:01:30.000Z", "dateReserved": "2020-04-08T00:00:00.000Z", "dateUpdated": "2024-08-05T02:46:10.452Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:varnish-cache:varnish_cache:*:*:*:*:-:*:*:*", "matchCriteriaId": "5C080F73-9811-489C-AE92-DE0433AE3688", "versionEndExcluding": "6.2.2", "versionStartIncluding": "6.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:varnish-cache:varnish_cache:*:*:*:*:-:*:*:*", "matchCriteriaId": "201226B6-1032-4A79-B785-CCFFFC31437D", "versionEndExcluding": "6.3.1", "versionStartIncluding": "6.3.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:lts:*:*:*", "matchCriteriaId": "4111AFB3-49AC-41ED-9ED1-187C0FAFD357", "versionEndExcluding": "6.0.5", "versionStartIncluding": "6.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*", "matchCriteriaId": "40513095-7E6E-46B3-B604-C926F1BA3568", "vulnerable": true}, {"criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in Varnish Cache before 6.0.5 LTS, 6.1.x and 6.2.x before 6.2.2, and 6.3.x before 6.3.1. It does not clear a pointer between the handling of one client request and the next request within the same connection. This sometimes causes information to be disclosed from the connection workspace, such as data structures associated with previous requests within this connection or VCL-related temporary headers."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Varnish Cache versiones anteriores a 6.0.5 LTS, versiones 6.1.x y versiones 6.2.x anteriores a 6.2.2 y versiones 6.3.x anteriores a 6.3.1. No borra un puntero entre el manejo de una petici\u00f3n de cliente y la siguiente petici\u00f3n dentro de la misma conexi\u00f3n. Esto a veces causa que la informaci\u00f3n sea revelada desde el espacio de trabajo de la conexi\u00f3n, tales como las estructuras de datos asociadas con peticiones anteriores dentro de esta conexi\u00f3n o los encabezados temporales relacionados con VCL."}], "id": "CVE-2019-20637", "lastModified": "2026-06-17T02:30:51.083", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-04-08T23:15:12.623", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00026.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00031.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://varnish-cache.org/security/VSV00004.html#vsv00004"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00026.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00031.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://varnish-cache.org/security/VSV00004.html#vsv00004"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-212"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2020:4756", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "varnish:6-8030020200530080205.30b713e6", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-11-04T00:00:00Z"}], "bugzilla": {"description": "varnish: not clearing pointer between two client requests leads to information disclosure", "id": "1772362", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1772362"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.1", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N", "status": "verified"}, "cwe": "CWE-200", "details": ["An issue was discovered in Varnish Cache before 6.0.5 LTS, 6.1.x and 6.2.x before 6.2.2, and 6.3.x before 6.3.1. It does not clear a pointer between the handling of one client request and the next request within the same connection. This sometimes causes information to be disclosed from the connection workspace, such as data structures associated with previous requests within this connection or VCL-related temporary headers."], "name": "CVE-2019-20637", "package_state": [{"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Fix deferred", "package_name": "rh-varnish5-varnish", "product_name": "Red Hat Software Collections"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Affected", "package_name": "rh-varnish6-varnish", "product_name": "Red Hat Software Collections"}], "public_date": "2019-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-20637\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-20637"], "threat_severity": "Low"}

{}