CVE-2024-50379

Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case insensitive file systems when the default servlet is enabled for write (non-default configuration).

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.

Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.98, which fixes the issue.

The Apache Tomcat software is developed in an open and participatory environment and released under the Apache License version 2. The Apache Tomcat project is intended to be a collaboration of the best-of-breed developers from around the world. We invite you to participate in this open development project

Security Fix(es):

Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case insensitive file systems when the default servlet is enabled for write (non-default configuration). 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. Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.08, which fixes the issue.(CVE-2024-50379)

Uncontrolled Resource Consumption vulnerability in the examples web application provided with Apache Tomcat leads to denial of service. 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 9.9.97. Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.98, which fixes the issue.(CVE-2024-54677)

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: RCE due to TOCTOU issue in JSP compilation (CVE-2024-50379)

• tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT (CVE-2025-24813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: RCE due to TOCTOU issue in JSP compilation (CVE-2024-50379)

• tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT (CVE-2025-24813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Root has patched CVE-2024-50379 in the org.apache.tomcat.embed:tomcat-embed-core package for Root:Maven. Multiple fixed versions available.

Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case insensitive file systems when the default servlet is enabled for write (non-default configuration). 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. Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.98, which fixes the issue.

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Tomcat is developed in an open and participatory environment and released under the Apache Software License version 2.0. Tomcat is intended to be a collaboration of the best-of-breed developers from around the world.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)
• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)
• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation (CVE-2024-56337)
• tomcat: Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame (CVE-2025-31650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: RCE due to TOCTOU issue in JSP compilation (CVE-2024-50379)
• tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT (CVE-2025-24813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• tomcat: RCE due to TOCTOU issue in JSP compilation (CVE-2024-50379)
• tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT (CVE-2025-24813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case insensitive file systems when the default servlet is enabled for write (non-default configuration).

This issue affects Apache Tomcat: from 11.0.0 through 11.0.1, from 10.1.0 through 10.1.33, from 9.0.0 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.

Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.98, which fixes the issue.

• CVE-2024-50379: fix inconsistent resource metadata with current GET and PUT/DELETE

TuxCare rebuilt 3 packages to address 10 CVEs. Fixed in 8.5.100.tuxcare.1.

TuxCare rebuilt 5 packages to address 18 CVEs. Fixed in 9.0.75-tuxcare.1.

TuxCare rebuilt 6 packages to address 18 CVEs. Fixed in 9.0.83-tuxcare.1.

TuxCare rebuilt 4 packages to address 10 CVEs. Fixed in 9.0.90-tuxcare.1.

TuxCare rebuilt 3 packages to address 2 CVEs. Fixed in 9.0.50-tuxcare.1.

• CVE-2024-50379: fix TOCTOU vulnerability in JSP compilation to prevent RCE on case insensitive file systems
• CVE-2024-38286: fix issue of resource allocation without limits or throttling vulnerability in TLS handshake process
• Apply skip-common-daemon patch to remove the commons-daemon.jar copy in build.xml, as Alma/RHEL cannot ship bundled JARs and must use the system commons-daemon The ELS-provided source archive requires this adaptation

TuxCare rebuilt 2 packages to address 2 CVEs. Fixed in 9.0.87-tuxcare.2.

TuxCare rebuilt 6 packages to address 22 CVEs. Fixed in 10.1.18-tuxcare.1.

TuxCare rebuilt 5 packages to address 23 CVEs. Fixed in 9.0.46-tuxcare.1.

• SECURITY UPDATE: HTTP/2 header limit errors deferred until whole header block read
  • debian/patches/CVE-2024-24549.patch: validate headers after each HEADERS/CONTINUATION payload instead of only at end of block in java/org/apache/coyote/http2/Http2Parser.java, and swap the header emitter to the sink once validation fails in java/org/apache/coyote/http2/{Stream,Http2UpgradeHandler}.java
  • CVE-2024-24549
• SECURITY UPDATE: HTTP/2 active stream miscount leading to infinite connection timeout
  • debian/patches/CVE-2024-34750.patch: count each stream out of the active set exactly once in java/org/apache/coyote/http2/{Http2UpgradeHandler,Http2AsyncUpgradeHandler,Stream}.java
  • CVE-2024-34750
• SECURITY UPDATE: RCE via TOCTOU race in write-enabled default servlet on case insensitive file systems
  • debian/patches/CVE-2024-50379.patch: add path-keyed read/write locking via the new java/org/apache/catalina/WebResourceLockSet.java and use it in java/org/apache/catalina/webresources/{DirResourceSet,FileResource}.java
  • CVE-2024-50379
• SECURITY UPDATE: incomplete mitigation for CVE-2024-50379 on Java 8 and Java 11
  • debian/patches/CVE-2024-56337.patch: set -Dsun.io.useCanonCaches=false before any file system access in bin/catalina.sh
  • CVE-2024-56337
• SECURITY UPDATE: authentication bypass when a Jakarta Authentication component throws
  • debian/patches/CVE-2024-52316.patch: set a 500 status when validateRequest() throws AuthException in java/org/apache/catalina/authenticator/AuthenticatorBase.java
  • CVE-2024-52316
• SECURITY UPDATE: HTTP/2 denial of service via client triggered server side stream resets
  • debian/patches/CVE-2025-48989.patch: charge server initiated resets to the overhead counter in java/org/apache/coyote/http2/{Http2UpgradeHandler,Http2AsyncUpgradeHandler}.java
  • CVE-2025-48989
• SECURITY UPDATE: directory traversal via Rewrite Valve normalizing before decoding
  • debian/patches/CVE-2025-55752.patch: decode the rewritten URL before normalizing it in java/org/apache/catalina/valves/rewrite/RewriteValve.java
  • CVE-2025-55752
• SECURITY UPDATE: EncryptInterceptor padding oracle from the CBC default
  • debian/patches/CVE-2026-29146.patch: reject cipher modes that provide no protection and warn on the weaker ones in java/org/apache/catalina/tribes/group/interceptors/EncryptInterceptor.java; AES/GCM/PKCS5Padding, AES/CBC/NoPadding, AES/CFB/NoPadding and AES/OFB/NoPadding are now refused at startup
  • CVE-2026-29146

• SECURITY UPDATE: Denial of service in HTTP/2 - a stream could be removed from the count of active streams more than once, driving the count below the real value, so an infinite connection timeout was applied and connections that should have been closed stayed open
  • debian/patches/CVE-2024-34750.patch: guard each stream with an AtomicBoolean so that it is removed from the active stream count at most once, and route the decrements through the new decrementActiveRemoteStreamCount(Stream) helper
  • CVE-2024-34750
• SECURITY UPDATE: Remote code execution via the write enabled default servlet - on a case insensitive file system a race between a read and a concurrent write for the same path allowed an uploaded file to be picked up and compiled as a JSP
  • debian/patches/CVE-2024-50379.patch: add the WebResourceLockSet interface and serialise reads and writes for the same resource path in DirResourceSet and FileResource through a per-path read/write lock
  • CVE-2024-50379
• SECURITY UPDATE: Authentication bypass when a custom Jakarta Authentication component throws an exception without setting an HTTP status, leaving the response status at 200
  • debian/patches/CVE-2024-52316.patch: explicitly set a 500 status in authenticateJaspic() when validateRequest() throws an AuthException
  • CVE-2024-52316
• SECURITY UPDATE: Remote code execution via the write enabled default servlet - the mitigation for CVE-2024-50379 was incomplete because the JVM global canonical file name cache could still return a stale result for the concurrently written path
  • debian/patches/CVE-2024-56337.patch: disable the canonical file name cache before a potentially exposed WebResourceSet starts and refuse to start it if that cannot be confirmed, add Jre12Compat and Jre21Compat for the per Java version cache behaviour, and pass -Dsun.io.useCanonCaches=false from catalina.sh
  • CVE-2024-56337
• SECURITY UPDATE: Denial of service in HTTP/2 (MadeYouReset) - frames that make the server reset a stream were not counted against the connection overhead budget, so the CVE-2023-44487 mitigation never triggered
  • debian/patches/CVE-2025-48989.patch: count every RST_STREAM frame Tomcat sends using overheadResetFactor
  • CVE-2025-48989
• SECURITY UPDATE: Directory traversal via the RewriteValve, with possible remote code execution if PUT is enabled - the rewritten URL was normalized while still percent encoded, so an encoded ../ survived normalization and was decoded afterwards, letting the request escape into /WEB-INF/ or /META-INF/
  • debian/patches/CVE-2025-55752.patch: decode the rewritten URL before normalizing it, and reject the request with a 400 when normalization reports that the path escapes root
  • CVE-2025-55752
• SECURITY UPDATE: Padding oracle in the cluster EncryptInterceptor - the interceptor accepted cipher mode and padding combinations that offer no protection, and the CBC modes it accepted are malleable and open to a padding oracle
  • debian/patches/CVE-2026-29146.patch: reject the cipher mode and padding combinations that offer no protection, warn for the CBC, CFB and OFB modes with PKCS5Padding that are kept for compatibility, and recognise GCM/NoPadding as the recommended transformation. The patch also carries the upstream partial revert 776e12b3, without which the fix would reintroduce CVE-2026-34486 by passing messages that failed to decrypt up the interceptor chain with their raw bytes. Note that, as upstream, explicit EncryptInterceptor configurations using a mode that offers no protection (NONE, ECB, PCBC, CTS, KW, KWP, CTR, and CBC, CFB or OFB with NoPadding) are now rejected at startup. The default …

• SECURITY UPDATE: fix for the following CVEs:
  • CVE-2024-56337: incomplete mitigation of CVE-2024-50379 — the JVM global canonical file name cache (sun.io.useCanonCaches) could still return a stale answer for a concurrently written path, leaving the TOCTOU race during JSP compilation exploitable on case-insensitive file systems with a write-enabled Default Servlet. DirResourceSet now verifies at startup that the cache is disabled, disabling it reflectively where possible and refusing to start the potentially vulnerable web application otherwise; new Jre12Compat and Jre21Compat tiers implement the per-JRE detection, and catalina.sh sets -Dsun.io.useCanonCaches=false before the JVM caches it.

TuxCare rebuilt 5 packages to address 6 CVEs. Fixed in 9.0.39-tuxcare.1.

TuxCare rebuilt 5 packages to address 6 CVEs. Fixed in 9.0.13-tuxcare.4.

RCE due to TOCTOU issue in JSP compilation. (CVE-2024-50379) DoS in examples web application. (CVE-2024-54677)

These are all security issues fixed in the tomcat-9.0.98-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the tomcat10-10.1.34-1.1 package on the GA media of openSUSE Tumbleweed.

This update for tomcat10 fixes the following issues:

Update to Tomcat 10.1.34

• Fixed CVEs:
  • CVE-2024-54677: DoS in examples web application (bsc#1234664)
  • CVE-2024-50379: RCE due to TOCTOU issue in JSP compilation (bsc#1234663)
  • CVE-2024-52317: Request/response mix-up with HTTP/2 (bsc#1233435)
  • CVE-2024-56337: RCE due to TOCTOU issue in JSP compilation - mitigation was incomplete
• Catalina
  • Add: Add option to serve resources from subpath only with WebDAV Servlet like with DefaultServlet. (michaelo)
  • Fix: Add special handling for the protocols attribute of SSLHostConfig in storeconfig. (remm)
  • Fix: 69442: Fix case sensitive check on content-type when parsing request parameters. (remm)
  • Code: Refactor duplicate code for extracting media type and subtype from content-type into a single method. (markt)
  • Fix: Compatibility of generated embedded code with components where constructors or property related methods throw a checked exception. (remm)
  • Fix: The previous fix for inconsistent resource metadata during concurrent reads and writes was incomplete. (markt)
  • Fix: #780: Fix content-range header length. Submitted by Chenjp. (remm)
  • Fix: 69444: Ensure that the jakarta.servlet.error.message request attribute is set when an application defined error page is called. (markt)
  • Fix: Avoid quotes for numeric values in the JSON generated by the status servlet. (remm)
  • Add: Add strong ETag support for the WebDAV and default servlet, which can be enabled by using the useStrongETags init parameter with a value set to true. The ETag generated will be a SHA-1 checksum of the resource content. (remm)
  • Fix: Use client locale for directory listings. (remm)
  • Fix: 69439: Improve the handling of multiple Cache-Control headers in the ExpiresFilter. Based on pull request #777 by Chenjp. (markt)
  • Fix: 69447: Update the support for caching classes the web application class loader cannot find to take account of classes loaded from external repositories. Prior to this fix, these classes could be incorrectly marked as not found. (markt)
  • Fix: 69466: Rework handling of HEAD requests. Headers explicitly set by users will not be removed and any header present in a HEAD request will also be present in the equivalent GET request. There may be some headers, as per RFC 9110, section 9.3.2, that are present in a GET request that are not present in the equivalent HEAD request. (markt)
  • Fix: 69471: Log instances of CloseNowException caught by ApplicationDispatcher.invoke() at debug level rather than error level as they are very likely to have been caused by a client disconnection or similar I/O issue. (markt)
  • Add: Add a test case for the fix for 69442. Also refactor references to application/x-www-form-urlencoded. Based on pull request #779 by Chenjp. (markt)
  • Fix: 69476: Catch possible ISE when trying to report PUT failure in the DefaultServlet. (remm)
  • Add: Add support for RateLimit header fields for HTTP (draft) in the RateLimitFilter. Based on pull request #775 provided by Chenjp. (markt)
  • Add: #787: Add regression tests for 69478. Pull request provided by Thomas Krisch. (markt)
  • Fix: The default servlet now rejects HTTP range requests when two or more of the requested ranges overlap. Based on pull request #782 provided by Chenjp. (markt)
  • Fix: Enhance Content-Range verification for partial PUT requests handled by the default servlet. Provided by Chenjp in pull request #778. (markt)
  • Fix: Harmonize DataSourceStore lookup in the global resources to optionally avoid the comp/env prefix which is usually not used there. (remm)
  • Fix: As required by RFC 9110, the HTTP Range header will now only be processed for GET requests. Based on pull request #790 provided by Chenjp. (markt)
  • Fix: Deprecate the useAcceptRanges initialisation parameter for the …

This update for tomcat fixes the following issues:

Update to Tomcat 9.0.98

• Fixed CVEs:
  • CVE-2024-54677: DoS in examples web application (bsc#1234664)
  • CVE-2024-50379: RCE due to TOCTOU issue in JSP compilation (bsc#1234663)
  • CVE-2024-52317: Request/response mix-up with HTTP/2 (bsc#1233435)
• Catalina
  • Add: Add option to serve resources from subpath only with WebDAV Servlet like with DefaultServlet. (michaelo)
  • Fix: Add special handling for the protocols attribute of SSLHostConfig in storeconfig. (remm)
  • Fix: 69442: Fix case sensitive check on content-type when parsing request parameters. (remm)
  • Code: Refactor duplicate code for extracting media type and subtype from content-type into a single method. (markt)
  • Fix: Compatibility of generated embedded code with components where constructors or property related methods throw a checked exception. (remm)
  • Fix: The previous fix for inconsistent resource metadata during concurrent reads and writes was incomplete. (markt)
  • Fix: 69444: Ensure that the javax.servlet.error.message request attribute is set when an application defined error page is called. (markt)
  • Fix: Avoid quotes for numeric values in the JSON generated by the status servlet. (remm)
  • Add: Add strong ETag support for the WebDAV and default servlet, which can be enabled by using the useStrongETags init parameter with a value set to true. The ETag generated will be a SHA-1 checksum of the resource content. (remm)
  • Fix: Use client locale for directory listings. (remm)
  • Fix: 69439: Improve the handling of multiple Cache-Control headers in the ExpiresFilter. Based on pull request #777 by Chenjp. (markt)
  • Fix: 69447: Update the support for caching classes the web application class loader cannot find to take account of classes loaded from external repositories. Prior to this fix, these classes could be incorrectly marked as not found. (markt)
  • Fix: 69466: Rework handling of HEAD requests. Headers explicitly set by users will not be removed and any header present in a HEAD request will also be present in the equivalent GET request. There may be some headers, as per RFC 9110, section 9.3.2, that are present in a GET request that are not present in the equivalent HEAD request. (markt)
  • Fix: 69471: Log instances of CloseNowException caught by ApplicationDispatcher.invoke() at debug level rather than error level as they are very likely to have been caused by a client disconnection or similar I/O issue. (markt)
  • Add: Add a test case for the fix for 69442. Also refactor references to application/x-www-form-urlencoded. Based on pull request #779 by Chenjp. (markt)
  • Fix: 69476: Catch possible ISE when trying to report PUT failure in the DefaultServlet. (remm)
  • Add: Add support for RateLimit header fields for HTTP (draft) in the RateLimitFilter. Based on pull request #775 provided by Chenjp. (markt)
  • Add: #787: Add regression tests for 69478. Pull request provided by Thomas Krisch. (markt)
  • Fix: The default servlet now rejects HTTP range requests when two or more of the requested ranges overlap. Based on pull request #782 provided by Chenjp. (markt)
  • Fix: Enhance Content-Range verification for partial PUT requests handled by the default servlet. Provided by Chenjp in pull request #778. (markt)
  • Fix: Harmonize DataSourceStore lookup in the global resources to optionally avoid the comp/env prefix which is usually not used there. (remm)
  • Fix: As required by RFC 9110, the HTTP Range header will now only be processed for GET requests. Based on pull request #790 provided by Chenjp. (markt)
  • Fix: Deprecate the useAcceptRanges initialisation parameter for the default servlet. It will be removed in Tomcat 12 onwards where it will effectively be hard coded to true. (markt)
  • Add: Add DataSource based property storage for…

This update for tomcat fixes the following issues:

• CVE-2024-50379: Fixed remote code execution (RCE) due to TOCTOU issue in JSP compilation (bsc#1234663).
• CVE-2024-54677: Fixed denial-of-service (DoS) attack in examples web application (bsc#1234664).

This update for tomcat fixes the following issues:

Update to Tomcat 9.0.115:

• CVE-2025-48989: HTTP/2 protocol (including DNS over HTTPS) is vulnerable to 'MadeYouReset' DoS attack (bsc#1243895).
• CVE-2025-52434: race condition on connection close when using the APR/Native connector could lead to a JVM crash (bsc#1246389).
• CVE-2025-53506: uncontrolled resource HTTP/2 client consumption vulnerability (bsc#1246318).
• CVE-2025-66614: client certificate verification bypass due to virtual host mapping (bsc#1258371).
• CVE-2026-24733: improper input validation on HTTP/0.9 requests (bsc#1258385).
• CVE-2023-44487: Rapid reset attack (bsc#1216182).

It was discovered that Tomcat did not correctly handle case sensitivity. An attacker could possibly use this issue to bypass authentication mechanisms. (CVE-2025-46701)

Elysee Franchuk discovered that Tomcat did not correctly limit the number of attributes for a session. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-54677)

It was discovered that Tomcat did not correctly sanitize certain URLs. An attacker could possibly use this issue to bypass authentication mechanisms. (CVE-2025-31651)

It was discovered that Tomcat did not correctly handle certain malformed HTTP headers, which could lead to a memory leak. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2025-31650)

It was discovered that Tomcat did not correctly handle concurrent operations under certain circumstances. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-50379)

It was discovered that Tomcat did not correctly handle certain authentication errors. An attacker could possibly use this issue to bypass authentication mechanisms. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-52316)