CVE-2024-56337

high

Published 2025-07-16 · Modified 2025-07-16

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CVSS v3

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CVSS v4 NEW

—

not yet in upstream

VIR risk

8.0

Description

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`10.1.34-1`
sid	Fixed	`10.1.34-1`
forky	Fixed	`10.1.34-1`
bullseye	Fixed	`9.0.43-2~deb11u11`
bookworm	Fixed	`10.1.34-0+deb12u1`

Red Hat Fixed 2 releases

Version	Status	Fixed in
9	Fixed	—
8	Fixed	—

Rocky Linux Fixed 2 releases

Version	Status	Fixed in
9	Fixed	—
8	Fixed	—

Package impact

Ecosystem	Package	Vulnerable	Fixed
Maven	org.apache.tomcat:tomcat-catalina	`>=11.0.0-M1,<11.0.2`	`11.0.2`
Maven	org.apache.tomcat:tomcat-catalina	`>=10.1.0-M1,<10.1.34`	`10.1.34`
Maven	org.apache.tomcat:tomcat-embed-core	`>=9.0.0.M1,<9.0.98`	`9.0.98`
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=11.0.0-M1,<11.0.2`	`11.0.2`
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=10.1.0-M1,<10.1.34`	`10.1.34`
Maven	org.apache.tomcat.embed:tomcat-embed-core	`>=9.0.0.M1,<9.0.98`	`9.0.98`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.