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CVE-2020-13943

Status Candidate

Overview

If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.

Related Files

Ubuntu Security Notice USN-5360-1
Posted Apr 1, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5360-1 - It was discovered that Tomcat incorrectly performed input verification. A remote attacker could possibly use this issue to intercept sensitive information. It was discovered that Tomcat did not properly deserialize untrusted data. An attacker could possibly use this issue to execute arbitrary code. 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.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-13943, CVE-2021-25122, CVE-2021-41079
SHA-256 | 3436d55d788ad60834f3280cd7d2491a02f126d834178f1f7bb6700121442cf9
Red Hat Security Advisory 2021-5134-05
Posted Dec 15, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-5134-05 - This release of Red Hat Fuse 7.10.0 serves as a replacement for Red Hat Fuse 7.9, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include code execution, cross site scripting, denial of service, deserialization, information leakage, memory leak, privilege escalation, server-side request forgery, and traversal vulnerabilities.

tags | advisory, denial of service, vulnerability, code execution, xss, memory leak
systems | linux, redhat
advisories | CVE-2019-10744, CVE-2019-12415, CVE-2020-11987, CVE-2020-11988, CVE-2020-13943, CVE-2020-13949, CVE-2020-15522, CVE-2020-17521, CVE-2020-17527, CVE-2020-26217, CVE-2020-26259, CVE-2020-27218, CVE-2020-27223, CVE-2020-27782, CVE-2020-28491, CVE-2020-2875, CVE-2020-2934, CVE-2020-35510, CVE-2020-9488, CVE-2021-20218, CVE-2021-21290, CVE-2021-21295, CVE-2021-21341, CVE-2021-21342, CVE-2021-21343, CVE-2021-21344
SHA-256 | 9284d27525337878d1b616a42ec6964f345739a90a655ed05cfae5b196bdeacd
Red Hat Security Advisory 2021-4012-01
Posted Oct 28, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4012-01 - Red Hat support for Spring Boot provides an application platform that reduces the complexity of developing and operating applications for OpenShift as a containerized platform. This release of Red Hat support for Spring Boot 2.4.9 serves as a replacement for Red Hat support for Spring Boot 2.3.10 and includes security, bug fixes, and enhancements. For more information, see the release notes listed in the References section.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-13943, CVE-2020-17527
SHA-256 | ad5a223d35cf4cbbf00fc0835b2b348db5c25cea1db02646b8b345b9c3a7462b
Red Hat Security Advisory 2021-0495-01
Posted Feb 11, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0495-01 - Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache Tomcat Servlet container, JBoss HTTP Connector, the PicketLink Vault extension for Apache Tomcat, and the Tomcat Native library. This release of Red Hat JBoss Web Server 5.4.1 serves as a replacement for Red Hat JBoss Web Server 5.4.0, and includes bug fixes, enhancements, and component upgrades, which are documented in the Release Notes, linked to in the References. Issues addressed include information leakage and null pointer vulnerabilities.

tags | advisory, java, web, vulnerability
systems | linux, redhat
advisories | CVE-2020-13943, CVE-2020-17527, CVE-2020-1971, CVE-2021-24122
SHA-256 | 509af1d66234eeb0b945b2480eb44b7ab50abe8dbfb702cd95c57736319e552b
Red Hat Security Advisory 2021-0494-01
Posted Feb 11, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0494-01 - Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache Tomcat Servlet container, JBoss HTTP Connector, the PicketLink Vault extension for Apache Tomcat, and the Tomcat Native library. This release of Red Hat JBoss Web Server 5.4.1 serves as a replacement for Red Hat JBoss Web Server 5.4.0, and includes bug fixes, enhancements and component upgrades, which are documented in the Release Notes, linked to in the References. Issues addressed include information leakage and null pointer vulnerabilities.

tags | advisory, java, web, vulnerability
systems | linux, redhat
advisories | CVE-2020-13943, CVE-2020-17527, CVE-2020-1971, CVE-2021-24122
SHA-256 | 1ce6ce10981c92ecfd2b190416f912213353234425c047f7f03ebe8cae8093d3
Debian Security Advisory 4835-1
Posted Jan 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4835-1 - Two vulnerabilities were discovered in the Tomcat servlet and JSP engine, which could result in information disclosure.

tags | advisory, vulnerability, info disclosure
systems | linux, debian
advisories | CVE-2020-13943, CVE-2020-17527
SHA-256 | 7f3756a8dc94a8beea932a635225c00aecca17b7645a6dfc7cb9022698d5f74f
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