GHSA-27HP-XHWR-WR2M
Vulnerability from github – Published: 2024-12-20 18:31 – Updated: 2025-11-03 22:52
VLAI?
Summary
Apache Tomcat Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability
Details
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 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 ?
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-catalina"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.34"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "9.0.0.M1"
},
{
"fixed": "9.0.98"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-M1"
},
{
"fixed": "11.0.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "10.1.0-M1"
},
{
"fixed": "10.1.34"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.tomcat.embed:tomcat-embed-core"
},
"ranges": [
{
"events": [
{
"introduced": "9.0.0.M1"
},
{
"fixed": "9.0.98"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-56337"
],
"database_specific": {
"cwe_ids": [
"CWE-367"
],
"github_reviewed": true,
"github_reviewed_at": "2024-12-20T19:50:45Z",
"nvd_published_at": "2024-12-20T16:15:24Z",
"severity": "HIGH"
},
"details": "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.\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.",
"id": "GHSA-27hp-xhwr-wr2m",
"modified": "2025-11-03T22:52:07Z",
"published": "2024-12-20T18:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56337"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/tomcat"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/b2b9qrgjrz1kvo4ym8y2wkfdvwoq6qbp"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00009.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250103-0002"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.34"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.2"
},
{
"type": "WEB",
"url": "https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.98"
},
{
"type": "WEB",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-50379"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "Apache Tomcat Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability"
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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