CVE-2024-56337 (GCVE-0-2024-56337)

Vulnerability from cvelistv5 – Published: 2024-12-20 15:28 – Updated: 2025-11-04 15:59
VLAI
Title
Apache Tomcat: RCE due to TOCTOU issue in JSP compilation - CVE-2024-50379 mitigation was incomplete
Summary
Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat. 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. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected. The mitigation for CVE-2024-50379 was incomplete. Users running Tomcat on a case insensitive file system with the default servlet write enabled (readonly initialisation parameter 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: - running on Java 8 or Java 11: the system property sun.io.useCanonCaches must be explicitly set to false (it defaults to true) - running on Java 17: the system property sun.io.useCanonCaches, if set, must be set to false (it defaults to false) - running on Java 21 onwards: no further configuration is required (the system property and the problematic cache have been removed) Tomcat 11.0.3, 10.1.35 and 9.0.99 onwards will include checks that sun.io.useCanonCaches is set appropriately before allowing the default servlet to be write enabled on a case insensitive file system. Tomcat will also set sun.io.useCanonCaches to false by default where it can.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Affected: 11.0.0-M1 , ≤ 11.0.1 (semver)
Affected: 10.1.0-M1 , ≤ 10.1.33 (semver)
Affected: 9.0.0.M1 , ≤ 9.0.97 (semver)
Affected: 8.5.0 , ≤ 8.5.100 (semver)
Unknown: 3 , < 8.5.0 (semver)
Unknown: 10.0.0-M1 , ≤ 10.0.27 (semver)
Create a notification for this product.
Credits
This vulnerability was first reported by Nacl, WHOAMI, Yemoli and Ruozhi. This vulnerability was independently reported with a very helpful PoC by dawu@knownsec 404 team and Sunflower@knownsec 404 team
Show details on NVD website
To clipboard 

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      "cve": "CVE-2024-56337",
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      "initial_release_date": "2024-12-20T15:28:54.738000+00:00",
      "product_status:fixed": "99",
      "product_status:known_affected": "7",
      "product_status:known_not_affected": "31",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56337.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-10T03:25:47Z",
      "cve": "CVE-2024-56337",
      "id": "CVE-2024-56337",
      "initial_release_date": "2025-02-14T04:02:08Z",
      "product_status:known_affected": "566",
      "product_status:recommended": "335",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-56337",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-56337.json",
      "version": "32"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://security.netapp.com/advisory/ntap-20250103-0002/\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00009.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T20:49:06.683Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 9.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-56337\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-08-13T13:28:46.946742Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-12-31T18:50:23.435Z\"}}], \"cna\": {\"title\": \"Apache Tomcat: RCE due to TOCTOU issue in JSP compilation - CVE-2024-50379 mitigation was incomplete\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"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\"}], \"metrics\": [{\"other\": {\"type\": \"Textual description of severity\", \"content\": {\"text\": \"important\"}}}], \"affected\": [{\"vendor\": \"Apache Software Foundation\", \"product\": \"Apache Tomcat\", \"versions\": [{\"status\": \"affected\", \"version\": \"11.0.0-M1\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"11.0.1\"}, {\"status\": \"affected\", \"version\": \"10.1.0-M1\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"10.1.33\"}, {\"status\": \"affected\", \"version\": \"9.0.0.M1\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"9.0.97\"}, {\"status\": \"affected\", \"version\": \"8.5.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"8.5.100\"}, {\"status\": \"unknown\", \"version\": \"3\", \"lessThan\": \"8.5.0\", \"versionType\": \"semver\"}, {\"status\": \"unknown\", \"version\": \"10.0.0-M1\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"10.0.27\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://www.cve.org/CVERecord?id=CVE-2024-50379\", \"tags\": [\"vdb-entry\"]}, {\"url\": \"https://lists.apache.org/thread/b2b9qrgjrz1kvo4ym8y2wkfdvwoq6qbp\", \"tags\": [\"vendor-advisory\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat.\\n\\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 following versions were EOL at the time the CVE was created but are \\nknown to be affected: 8.5.0 though 8.5.100. 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. Tomcat will also set\\u00a0sun.io.useCanonCaches to false by default where it can.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eTime-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat.\u003c/p\u003e\u003cp\u003eThis 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.\u003cbr\u003eThe following versions were EOL at the time the CVE was created but are \\nknown to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions \\nmay also be affected.\u003cbr\u003e\u003c/p\u003e\u003cp\u003eThe mitigation for CVE-2024-50379 was incomplete.\u003c/p\u003e\u003cp\u003eUsers 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:\u003cbr\u003e- running on Java 8 or Java 11: the system property\u0026nbsp;sun.io.useCanonCaches must be explicitly set to false (it defaults to true)\u003cbr\u003e- running on Java 17: the\u0026nbsp;system property sun.io.useCanonCaches, if set, must be set to false\u0026nbsp;(it defaults to false)\u003cbr\u003e- running on Java 21 onwards: no further configuration is required\u0026nbsp;(the system property and the problematic cache have been removed)\u003c/p\u003e\u003cp\u003e\u003cspan style=\\\"background-color: var(--wht);\\\"\u003eTomcat 11.0.3, 10.1.35 and 9.0.99 onwards will include checks that\u0026nbsp;sun.io.useCanonCaches is set appropriately before allowing the default servlet to be write enabled on a case insensitive file system. Tomcat will also set\u0026nbsp;sun.io.useCanonCaches to false by default where it can.\u003c/span\u003e\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-367\", \"description\": \"CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition\"}]}], \"providerMetadata\": {\"orgId\": \"f0158376-9dc2-43b6-827c-5f631a4d8d09\", \"shortName\": \"apache\", \"dateUpdated\": \"2025-10-29T11:52:37.455Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56337\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-04T15:59:21.843Z\", \"dateReserved\": \"2024-12-20T11:16:29.949Z\", \"assignerOrgId\": \"f0158376-9dc2-43b6-827c-5f631a4d8d09\", \"datePublished\": \"2024-12-20T15:28:54.738Z\", \"assignerShortName\": \"apache\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.