{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-56337", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2024-12-20T11:16:29.949Z", "datePublished": "2024-12-20T15:28:54.738Z", "dateUpdated": "2025-08-13T13:29:16.513Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Apache Tomcat", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "11.0.1", "status": "affected", "version": "11.0.0-M1", "versionType": "semver"}, {"lessThanOrEqual": "10.1.33", "status": "affected", "version": "10.1.0-M1", "versionType": "semver"}, {"lessThanOrEqual": "9.0.97", "status": "affected", "version": "9.0.0.M1", "versionType": "semver"}, {"lessThanOrEqual": "8.5.100", "status": "affected", "version": "8.5.0", "versionType": "semver"}, {"lessThan": "8.5.0", "status": "unknown", "version": "3", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "This vulnerability was first reported by Nacl, WHOAMI, Yemoli and Ruozhi."}, {"lang": "en", "type": "finder", "value": "This vulnerability was independently reported with a very helpful PoC by dawu@knownsec 404 team and Sunflower@knownsec 404 team"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat.</p><p>This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.1, from 10.1.0-M1 through 10.1.33, from 9.0.0.M1 through 9.0.97.<br>The following versions were EOL at the time the CVE was created but are \nknown to be affected: 8.5.0 though 8.5.100. 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Other, older, EOL versions \nmay also be affected.\n\n\nThe mitigation for CVE-2024-50379 was incomplete.\n\nUsers running Tomcat on a case insensitive file system with the default servlet write enabled (readonly initialisation \nparameter set to the non-default value of false) may need additional configuration to fully mitigate CVE-2024-50379 depending on which version of Java they are using with Tomcat:\n- running on Java 8 or Java 11: the system property\u00a0sun.io.useCanonCaches must be explicitly set to false (it defaults to true)\n- running on Java 17: the\u00a0system property sun.io.useCanonCaches, if set, must be set to false\u00a0(it defaults to false)\n- running on Java 21 onwards: no further configuration is required\u00a0(the system property and the problematic cache have been removed)\n\nTomcat 11.0.3, 10.1.35 and 9.0.99 onwards will include checks that\u00a0sun.io.useCanonCaches is set appropriately before allowing the default servlet to be write enabled on a case insensitive file system. 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Other, older, EOL versions \nmay also be affected.\n\n\nThe mitigation for CVE-2024-50379 was incomplete.\n\nUsers running Tomcat on a case insensitive file system with the default servlet write enabled (readonly initialisation \nparameter set to the non-default value of false) may need additional configuration to fully mitigate CVE-2024-50379 depending on which version of Java they are using with Tomcat:\n- running on Java 8 or Java 11: the system property\u00a0sun.io.useCanonCaches must be explicitly set to false (it defaults to true)\n- running on Java 17: the\u00a0system property sun.io.useCanonCaches, if set, must be set to false\u00a0(it defaults to false)\n- running on Java 21 onwards: no further configuration is required\u00a0(the system property and the problematic cache have been removed)\n\nTomcat 11.0.3, 10.1.35 and 9.0.99 onwards will include checks that\u00a0sun.io.useCanonCaches is set appropriately before allowing the default servlet to be write enabled on a case insensitive file system. 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Los usuarios que ejecuten Tomcat en un sistema de archivos que no distinga entre may\u00fasculas y min\u00fasculas con la escritura del servlet predeterminada habilitada (el par\u00e1metro de inicializaci\u00f3n de solo lectura establecido en el valor no predeterminado de falso) pueden necesitar una configuraci\u00f3n adicional para mitigar por completo CVE-2024-50379 seg\u00fan la versi\u00f3n de Java que est\u00e9n usando con Tomcat: - ejecut\u00e1ndose en Java 8 o Java 11: la propiedad del sistema sun.io.useCanonCaches debe establecerse expl\u00edcitamente en falso (el valor predeterminado es verdadero) - ejecut\u00e1ndose en Java 17: la propiedad del sistema sun.io.useCanonCaches, si est\u00e1 establecida, debe establecerse en falso (el valor predeterminado es falso) - ejecut\u00e1ndose en Java 21 en adelante: no se requiere ninguna configuraci\u00f3n adicional (la propiedad del sistema y el cach\u00e9 problem\u00e1tico se han eliminado) Tomcat 11.0.3, 10.1.35 y 9.0.99 en adelante incluir\u00e1n comprobaciones de que sun.io.useCanonCaches est\u00e9 configurado correctamente antes de permitir que el servlet predeterminado est\u00e9 habilitado para escritura en un sistema de archivos que no distinga entre may\u00fasculas y min\u00fasculas. 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{"affected_release": [{"advisory": "RHSA-2025:4522", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.8", "package": "tomcat", "product_name": "Red Hat JBoss Web Server 5", "release_date": "2025-05-08T00:00:00Z"}, {"advisory": "RHSA-2025:4521", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.8::el7", "package": "jws5-tomcat-0:9.0.87-11.redhat_00010.1.el7jws", "product_name": "Red Hat JBoss Web Server 5.8 on RHEL 7", "release_date": "2025-05-08T00:00:00Z"}, {"advisory": "RHSA-2025:4521", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.8::el8", "package": "jws5-tomcat-0:9.0.87-11.redhat_00010.1.el8jws", "product_name": "Red Hat JBoss Web Server 5.8 on RHEL 8", "release_date": "2025-05-08T00:00:00Z"}, {"advisory": "RHSA-2025:4521", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5.8::el9", "package": "jws5-tomcat-0:9.0.87-11.redhat_00010.1.el9jws", "product_name": "Red Hat JBoss Web Server 5.8 on RHEL 9", "release_date": "2025-05-08T00:00:00Z"}], "bugzilla": {"description": "tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation", "id": "2333521", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2333521"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-367", "details": ["Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat.\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.1, from 10.1.0-M1 through 10.1.33, from 9.0.0.M1 through 9.0.97.\nThe mitigation for CVE-2024-50379 was incomplete.\nUsers running Tomcat on a case insensitive file system with the default servlet write enabled (readonly initialisation \nparameter set to the non-default value of false) may need additional configuration to fully mitigate CVE-2024-50379 depending on which version of Java they are using with Tomcat:\n- running on Java 8 or Java 11: the system property\u00a0sun.io.useCanonCaches must be explicitly set to false (it defaults to true)\n- running on Java 17: the\u00a0system property sun.io.useCanonCaches, if set, must be set to false\u00a0(it defaults to false)\n- running on Java 21 onwards: no further configuration is required\u00a0(the system property and the problematic cache have been removed)\nTomcat 11.0.3, 10.1.35 and 9.0.99 onwards will include checks that\u00a0sun.io.useCanonCaches is set appropriately before allowing the default servlet to be write enabled on a case insensitive file system. Tomcat will also set\u00a0sun.io.useCanonCaches to false by default where it can.", "The fix for CVE-2024-50379 in Apache Tomcat was insufficient to mitigate the issue fully. A Time-of-check Time-of-use (TOCTOU) race condition occurs during JSP compilation on case-insensitive file systems when the default servlet is enabled for writing. This vulnerability allows an uploaded file to be treated as a JSP and executed, resulting in remote code execution."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-56337", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "tomcat9", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "tomcat6", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "pki-deps:10.6/pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:6", "fix_state": "Fix deferred", "package_name": "tomcat", "product_name": "Red Hat JBoss Web Server 6"}], "public_date": "2024-12-20T15:28:54Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56337\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56337\nhttps://lists.apache.org/thread/b2b9qrgjrz1kvo4ym8y2wkfdvwoq6qbp\nhttps://www.cve.org/CVERecord?id=CVE-2024-50379"], "statement": "The vulnerability is marked as moderate rather than important due to the specific conditions required for exploitation. For the attack to succeed, the server must be running on a case-insensitive file system (e.g., Windows or macOS) and have the default servlet enabled with write permissions \u2014a configuration that is not common in production-grade environments. Additionally, the attacker must gain the ability to upload files to a writable directory and exploit a race condition to execute them as JSP files, which introduces a level of complexity and timing dependency.\nThe pki-servlet-engine package has been obsoleted by the tomcat package as of Red Hat Enterprise Linux 8.9 so no fixes for the servlet engine would be made available.\nRed Hat Satellite is not directed impacted by this issue as it does not include the affected Tomcat package. However, Tomcat is consumed by Candlepin, a component of Satellite. Red Hat Satellite users are advised to check the impact state of Red Hat Enterprise Linux as any necessary fixes will be distributed through the platform.", "threat_severity": "Moderate"}