CVE-2021-30640

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65.

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):

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65.(CVE-2021-30640)

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65.

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0 to 10.0.5; 9.0.0 to 9.0.45; 8.5.0 to 8.5.65.

• SECURITY UPDATE: Misc vulnerability fixes
  • CVE-2019-12418, CVE-2019-17563, CVE-2020-1935, CVE-2020-11996, CVE-2020-13934, CVE-2020-13935, CVE-2020-13943, CVE-2020-17527, CVE-2021-24122, CVE-2021-30639, CVE-2021-30640, CVE-2021-33037, CVE-2021-42340, CVE-2021-43980, CVE-2022-25762, CVE-2022-34305, CVE-2022-45143, CVE-2023-24998, CVE-2023-28709, CVE-2023-34981, CVE-2023-42794, CVE-2024-21733
• Update to 8.5.100
  • debian/rules, debian/libtomcat8-java.poms, debian/maven.rules, debian/tomcat8-common.links, debian/patches/0018-fix-manager-webapp.patch, debian/patches/0019-add-distribution-to-error-page.patch, debian/patches/0021-dont-test-unsupported-ciphers.patch, debian/patches/0101-skipping-tests-incompatible-with-firewall.patch: updated
  • debian/patches/0002-do-not-load-AJP13-connector-by-default.patch, debian/patches/0026-easymock4-compatibility.patch: removed as they were applied in upstream
  • CVE-2019-0221.patch, CVE-2019-10072-1.patch, CVE-2019-10072-2.patch, CVE-2022-42252.patch, CVE-2020-1938.patch, CVE-2021-25122.patch, CVE-2021-41079.patch, CVE-2022-29885.patch, CVE-2020-9484.patch, CVE-2021-25329-pre1.patch, CVE-2021-25329.patch, CVE-2022-23181.patch, CVE-2023-44487.patch, CVE-2023-46589-pre1.patch, CVE-2023-46589-pre2.patch, CVE-2023-46589-pre3.patch, CVE-2023-46589-pre4.patch, CVE-2023-46589.patch: removed because these CVEs were fixed in upstream
• Internal tests
  • debian/test_certs/*: updated from upstream branch 9.0.x, as the 8.0.x certs were expired

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. (CVE-2021-30640)

Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding. (CVE-2021-33037)

Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service. (CVE-2021-41079)

The fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5, 10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError. (CVE-2021-42340)

This update for tomcat fixes the following issues:

• CVE-2021-30640: Escape parameters in JNDI Realm queries (bsc#1188279).
• CVE-2021-33037: Process T-E header from both HTTP 1.0 and HTTP 1.1. clients (bsc#1188278).
• CVE-2021-41079: Fixed a denial of service caused by an unexpected TLS packet (bsc#1190558).

This update was imported from the SUSE:SLE-15-SP2:Update update project.

This update for tomcat fixes the following issues:

• CVE-2021-30640: Escape parameters in JNDI Realm queries (bsc#1188279).
• CVE-2021-33037: Process T-E header from both HTTP 1.0 and HTTP 1.1. clients (bsc#1188278).
• CVE-2021-41079: Fixed a denial of service caused by an unexpected TLS packet (bsc#1190558).

These are all security issues fixed in the tomcat-9.0.43-2.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the tomcat10-10.1.14-1.1 package on the GA media of openSUSE Tumbleweed.

This update for tomcat, javapackages-tools fixes the following issue:

Security issue fixed:

• CVE-2021-30640: Escape parameters in JNDI Realm queries (bsc#1188279).
• CVE-2021-33037: Process T-E header from both HTTP 1.0 and HTTP 1.1. clients (bsc#1188278).
• CVE-2021-41079: Fixed a denial of service caused by an unexpected TLS packet (bsc#1190558).

Non-security issues fixed:

• Add requires and conflicts to avoid the usage of the incompatible 'Java 11' with 'Tomcat'. (bsc#1185476)
• Rebuild javapackages-tools to fix a missing package on s390.

This update for tomcat fixes the following issues:

• CVE-2021-30640: Escape parameters in JNDI Realm queries (bsc#1188279).
• CVE-2021-33037: Process T-E header from both HTTP 1.0 and HTTP 1.1. clients (bsc#1188278).
• CVE-2021-41079: Fixed a denial of service caused by an unexpected TLS packet (bsc#1190558).

This update for tomcat fixes the following issues:

• CVE-2021-30640: Escape parameters in JNDI Realm queries (bsc#1188279).
• CVE-2021-33037: Process T-E header from both HTTP 1.0 and HTTP 1.1. clients (bsc#1188278).
• CVE-2021-41079: Fixed a denial of service caused by an unexpected TLS packet (bsc#1190558).

This update for tomcat fixes the following issues:

• CVE-2021-30640: Escape parameters in JNDI Realm queries (bsc#1188279).
• CVE-2021-33037: Process T-E header from both HTTP 1.0 and HTTP 1.1. clients (bsc#1188278).
• CVE-2021-41079: Fixed a denial of service caused by an unexpected TLS packet (bsc#1190558).

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 incorrectly performed input verification. A remote attacker could possibly use this issue to intercept sensitive information. (CVE-2020-13943, CVE-2020-17527, CVE-2021-25122, CVE-2021-30640)

It was discovered that Tomcat did not properly deserialize untrusted data. An attacker could possibly use this issue to execute arbitrary code. (CVE-2020-9484, CVE-2021-33037)

It was discovered that Tomcat did not properly validate the input length. An attacker could possibly use this to trigger an infinite loop, resulting in a denial of service. (CVE-2021-25329, CVE-2021-41079)