{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-23934", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2023-01-19T21:12:31.360Z", "datePublished": "2023-02-14T19:56:22.659Z", "dateUpdated": "2025-02-13T16:44:11.749Z"}, "containers": {"cna": {"title": "Wrkzeug's incorrect parsing of nameless cookies leads to __Host- cookies bypass", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "lang": "en", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 2.6, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"}, {"name": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028", "tags": ["x_refsource_MISC"], "url": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028"}, {"name": "https://github.com/pallets/werkzeug/releases/tag/2.2.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/pallets/werkzeug/releases/tag/2.2.3"}, {"url": "https://www.debian.org/security/2023/dsa-5470"}, {"url": "https://security.netapp.com/advisory/ntap-20230818-0003/"}], "affected": [{"vendor": "pallets", "product": "werkzeug", "versions": [{"version": "< 2.2.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-08-18T13:06:20.023Z"}, "descriptions": [{"lang": "en", "value": "Werkzeug is a comprehensive WSGI web application library. Browsers may allow \"nameless\" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3."}], "source": {"advisory": "GHSA-px8h-6qxv-m22q", "discovery": "UNKNOWN"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T10:49:07.628Z"}, "title": "CVE Program Container", "references": [{"name": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q", "tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"}, {"name": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028"}, {"name": "https://github.com/pallets/werkzeug/releases/tag/2.2.3", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/pallets/werkzeug/releases/tag/2.2.3"}, {"url": "https://www.debian.org/security/2023/dsa-5470", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20230818-0003/", "tags": ["x_transferred"]}]}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*", "matchCriteriaId": "EE8F26B3-94E2-45A2-A114-56AF4D262414", "versionEndExcluding": "2.2.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Werkzeug is a comprehensive WSGI web application library. Browsers may allow \"nameless\" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3."}], "id": "CVE-2023-23934", "lastModified": "2024-11-21T07:47:07.947", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 2.6, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-02-14T20:15:17.370", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/pallets/werkzeug/releases/tag/2.2.3"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"}, {"source": "security-advisories@github.com", "url": "https://security.netapp.com/advisory/ntap-20230818-0003/"}, {"source": "security-advisories@github.com", "url": "https://www.debian.org/security/2023/dsa-5470"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://github.com/pallets/werkzeug/releases/tag/2.2.3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20230818-0003/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.debian.org/security/2023/dsa-5470"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:1018", "cpe": "cpe:/a:redhat:openstack:17.0::el9", "package": "python-werkzeug-0:2.0.1-5.el9ost", "product_name": "Red Hat OpenStack Platform 17.0", "release_date": "2023-02-28T00:00:00Z"}], "bugzilla": {"description": "python-werkzeug: cookie prefixed with = can shadow unprefixed cookie", "id": "2170243", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2170243"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.6", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N", "status": "verified"}, "cwe": "CWE-20", "details": ["Werkzeug is a comprehensive WSGI web application library. Browsers may allow \"nameless\" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3.", "A flaw was found in python-werkzeug. Browsers may allow \"nameless\" cookies like =value instead of key=value. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie for another subdomain. If a Werkzeug application is running next to a vulnerable or malicious subdomain that sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key."], "name": "CVE-2023-23934", "package_state": [{"cpe": "cpe:/a:redhat:ceph_storage:7", "fix_state": "Affected", "package_name": "python-werkzeug", "product_name": "Red Hat Ceph Storage 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "python-werkzeug", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "python-werkzeug", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "python-werkzeug", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openstack:16.1", "fix_state": "Fix deferred", "package_name": "python-werkzeug", "product_name": "Red Hat OpenStack Platform 16.1"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Fix deferred", "package_name": "openstack-designate", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Fix deferred", "package_name": "python-werkzeug", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Fix deferred", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:storage:3", "fix_state": "Out of support scope", "package_name": "python-werkzeug", "product_name": "Red Hat Storage 3"}, {"cpe": "cpe:/a:redhat:rhui:3", "fix_state": "Out of support scope", "package_name": "python-werkzeug", "product_name": "Red Hat Update Infrastructure 3 for Cloud Providers"}], "public_date": "2023-02-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-23934\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-23934\nhttps://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028\nhttps://github.com/pallets/werkzeug/releases/tag/2.2.3\nhttps://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"], "threat_severity": "Low", "upstream_fix": "python-werkzeug 2.2.3"}