BIT-TOMCAT-2021-25122 Apache Tomcat h2c request mix-up

When responding to new h2c connection requests, Apache Tomcat versions 9.0.0 through 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request...

BIT-TOMCAT-2021-25329 Incomplete fix for CVE-2020-9484

The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0 to 10.0.0, 9.0.0 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously...

BIT-TOMCAT-2021-30639 DoS after non-blocking IO error

A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service. An error introduced as part of a change to improve error handling during non-blocking I/O meant that the error flag associated with the Request object was not reset between requests. This meant that once ...

BIT-TOMCAT-2021-30640 Auth weakness in JNDIRealm

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...

BIT-TOMCAT-2021-33037 Incorrect Transfer-Encoding handling with HTTP/1.0

Apache Tomcat 10.0.0 to 10.0.6, 9.0.0 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...

BIT-TOMCAT-2021-41079 Apache Tomcat DoS with unexpected TLS packet

Apache Tomcat 8.5.0 to 8.5.63, 9.0.0 to 9.0.43 and 10.0.0 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...

BIT-TOMCAT-2021-42340 DoS via memory leak with WebSocket connections

The fix for bug 63362 present in Apache Tomcat 10.1.0 to 10.1.0, 10.0.0 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...

BIT-TOMCAT-2021-43980 Apache Tomcat: Information disclosure

The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing but extremely hard to trigger concurrency bug in Apache Tomcat 10.1.0 to 10.1.0, 10.0.0 to 10.0.18, 9.0.0 to 9.0.60 and 8.5.0 to 8.5.77 that could...

BIT-TOMCAT-2022-23181 Local privilege escalation with FileStore

The fix for bug CVE-2020-9484 introduced a time of check, time of use vulnerability into Apache Tomcat 10.1.0 to 10.1.0, 10.0.0 to 10.0.14, 9.0.35 to 9.0.56 and 8.5.55 to 8.5.73 that allowed a local attacker to perform actions with the privileges of the user that the Tomcat process is using. This...

BIT-TOMCAT-2022-29885 EncryptInterceptor does not provide complete protection on insecure networks

The documentation of Apache Tomcat 10.1.0 to 10.1.0, 10.0.0 to 10.0.20, 9.0.13 to 9.0.62 and 8.5.38 to 8.5.78 for the EncryptInterceptor incorrectly stated it enabled Tomcat clustering to run over an untrusted network. This was not correct. While the EncryptInterceptor does provide confidentialit...

BIT-TOMCAT-2022-34305 XSS in examples web application

In Apache Tomcat 10.1.0 to 10.1.0, 10.0.0 to 10.0.22, 9.0.30 to 9.0.64 and 8.5.50 to 8.5.81 the Form authentication example in the examples web application displayed user provided data without filtering, exposing a XSS vulnerability...

BIT-TOMCAT-2022-42252 Apache Tomcat request smuggling via malformed content-length

If Apache Tomcat 8.5.0 to 8.5.82, 9.0.0 to 9.0.67, 10.0.0 to 10.0.26 or 10.1.0 to 10.1.0 was configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false the default for 8.5.x only, Tomcat did not reject a request containing an invalid Content-Length header making a request...

BIT-TOMCAT-2022-45143 Apache Tomcat: JsonErrorReportValve escaping

The JsonErrorReportValve in Apache Tomcat 8.5.83, 9.0.40 to 9.0.68 and 10.1.0 to 10.1.1 did not escape the type, message or description values. In some circumstances these are constructed from user provided data and it was therefore possible for users to supply values that invalidated or...

BIT-TOMCAT-2023-34981 Apache Tomcat: AJP response header mix-up

A regression in the fix for bug 66512 in Apache Tomcat 11.0.0, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SENDHEADERS messare woudl be sent for the response which in turn meant that at least one AJP proxy modproxyajp would use the response headers...

BIT-TOMCAT-2023-41080 Apache Tomcat: Open redirect with FORM authentication

URL Redirection to Untrusted Site 'Open Redirect' vulnerability in FORM authentication feature Apache Tomcat.This issue affects Apache Tomcat: from 11.0.0 through 11.0.0, from 10.1.0 through 10.0.12, from 9.0.0 through 9.0.79 and from 8.5.0 through 8.5.92. Older, EOL versions may also be affected...

BIT-TOMCAT-2023-42794 Apache Tomcat: FileUpload: DoS due to accumulation of temporary files on Windows

Incomplete Cleanup vulnerability in Apache Tomcat. The internal fork of Commons FileUpload packaged with Apache Tomcat 9.0.70 through 9.0.80 and 8.5.85 through 8.5.93 included an unreleased, in progress refactoring that exposed a potential denial of service on Windows if a web application opened ...

BIT-TOMCAT-2023-42795 Apache Tomcat: Failure during request clean-up leads to sensitive data leaking to subsequent requests

Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0 through 11.0.0, from 10.1.0 through 10.1.13, from 9.0.0 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process...

BIT-TOMCAT-2023-45648 Apache Tomcat: Trailer header parsing too lenient

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0 through 11.0.0, from 10.1.0 through 10.1.13, from 9.0.0 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a...

BIT-TOMCAT-2023-46589 Apache Tomcat: HTTP request smuggling via malformed trailer headers

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0 through 11.0.0, from 10.1.0 through 10.1.15, from 9.0.0 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to...

BIT-TOMCAT-2024-21733 Apache Tomcat: Leaking of unrelated request bodies in default error page

Generation of Error Message Containing Sensitive Information vulnerability in Apache Tomcat.This issue affects Apache Tomcat: from 8.5.7 through 8.5.63, from 9.0.0 through 9.0.43. Other, EOL versions may also be affected. Users are recommended to upgrade to version 8.5.64 onwards or 9.0.44 onward...