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CVSS: 7.5EPSS: 0%CPEs: 55EXPL: 1

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests. Al investigar el error 64830, se detectó que Apache Tomcat versiones 10.0.0-M1 hasta 10.0.0-M9, versiones 9.0.0-M1 hasta 9.0.39 y versiones 8.5.0 hasta 8.5.59, podría reutilizar un valor de encabezado de petición HTTP de la transmisión anterior recibida en una conexión HTTP/2 para la petición asociada con la transmisión posterior. Si bien esto probablemente conllevaría a un error y al cierre de la conexión HTTP/2, es posible que la información podría filtrarse entre peticiones • https://github.com/forse01/CVE-2020-17527-Tomcat http://www.openwall.com/lists/oss-security/2020/12/03/3 https://lists.apache.org/thread.html/r26a2a66339087fc37db3caf201e446d3e83b5cce314371e235ff1784%40%3Ccommits.tomee.apache.org%3E https://lists.apache.org/thread.html/r2d6e05c5ff96f8068a59dfdb3800e9ee8d4e36ce1971783c6e5f9b20%40%3Ccommits.tomee.apache.org%3E https://lists.apache.org/thread.html/r5a285242737ddef4d338236328aaaf3237183e1465a5efafd16b99ed%40%3Cdev.tomcat.apache.org%3E https://lists.apache.org/thread.html/r8a227ac6a755a6406c1cc47dd48800e973d4cf13fe7f • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 5.3EPSS: 0%CPEs: 131EXPL: 0

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. Si un cliente HTTP/2 conectado a Apache Tomcat versiones 10.0.0-M1 hasta 10.0.0-M7, versiones 9.0.0.M1 hasta 9.0.37 o versiones 8.5.0 hasta 8.5.57, excedió el número máximo acordado de transmisiones simultáneas para una conexión (en violación del protocolo HTTP/2), era posible que una petición subsiguiente realizada en esa conexión pudiera contener encabezados HTTP, incluyendo los pseudo encabezados HTTP/2, de una petición anterior en lugar de los encabezados previstos. Esto podría conllevar que los usuarios visualicen respuestas para recursos inesperados A flaw was found in Apache Tomcat. If an HTTP/2 client exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it is 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. • http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00021.html https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E https://lists.debian.org/debian-lts-announce/2020/10/msg00019.html https://security.netapp.com/advisory/ntap-20201016-0007 https://www.debian.org/security/2021/dsa-4835 https://www.oracle.com/security-alerts/cpuApr2021.html https://acces • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.5EPSS: 14%CPEs: 74EXPL: 2

The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service. La longitud de la carga útil en una trama de WebSocket no fue comprobada correctamente en Apache Tomcat versiones 10.0.0-M1 hasta 10.0.0-M6, versiones 9.0.0.M1 hasta 9.0.36, versiones 8.5.0 hasta 8.5.56 y versiones 7.0.27 hasta 7.0. 104. Las longitudes de carga útil no válidas podrían desencadenar un bucle infinito. • https://github.com/RedTeamPentesting/CVE-2020-13935 https://github.com/aabbcc19191/CVE-2020-13935 http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html https://kc.mcafee.com/corporate/index?page=content&id=SB10332 https://lists.apache.org/thread.html/r4e5d3c09f4dd2923191e972408b40fb8b42dbff0bc7904d44b651e50%40%3Cusers.tomcat.apache.org%3E https://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a701f93b85752651%40%3Cannounce& • CWE-400: Uncontrolled Resource Consumption CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

CVSS: 7.5EPSS: 91%CPEs: 54EXPL: 0

An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service. Una conexión directa h2c a Apache Tomcat versiones 10.0.0-M1 hasta 10.0.0-M6, versiones 9.0.0.M5 hasta 9.0.36 y versiones 8.5.1 hasta 8.5.56, no publicó el procesador HTTP/1.1 después de la actualización a HTTP/2. Si un número suficiente de tales peticiones fueron hechas, podría ocurrir una OutOfMemoryException conllevando a una denegación de servicio A flaw was found in Apache Tomcat, where an h2c direct connection did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests are made, an OutOfMemoryException could occur, leading to a denial of service. • http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3E https://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8%40%3Cdev.tomcat.apache.org%3E https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html https://security.netapp.com/advisory/ntap-20200724-0003 https://usn • CWE-400: Uncontrolled Resource Consumption CWE-401: Missing Release of Memory after Effective Lifetime CWE-476: NULL Pointer Dereference •

CVSS: 7.8EPSS: 0%CPEs: 27EXPL: 1

A Incorrect Default Permissions vulnerability in the packaging of tomcat on SUSE Enterprise Storage 5, SUSE Linux Enterprise Server 12-SP2-BCL, SUSE Linux Enterprise Server 12-SP2-LTSS, SUSE Linux Enterprise Server 12-SP3-BCL, SUSE Linux Enterprise Server 12-SP3-LTSS, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 12-SP2, SUSE Linux Enterprise Server for SAP 12-SP3, SUSE Linux Enterprise Server for SAP 15, SUSE OpenStack Cloud 7, SUSE OpenStack Cloud 8, SUSE OpenStack Cloud Crowbar 8 allows local attackers to escalate from group tomcat to root. This issue affects: SUSE Enterprise Storage 5 tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server 12-SP2-BCL tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server 12-SP2-LTSS tomcat versions prior to 8.0.53-29.32.1. SUSE Linux Enterprise Server 12-SP3-BCL tomcat versions prior to 8.0.53-29.32.1. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00066.html https://bugzilla.suse.com/show_bug.cgi?id=1172405 https://lists.apache.org/thread.html/r393d4f431683e99c839b4aed68f720b8583bca6c35cd84adccaa02be%40%3Cjava-dev.axis.apache.org%3E https://lists.apache.org/thread.html/r5be80ba868a11a1f64e4922399f171b8619bca4bc2039f79cf913928%40%3Cjava-dev.axis.apache.org%3E https://lists.apache.org/thread.html/ra87ec20a0f4b226c81c7eed27e5d7433ccdc41e61a8da408a45f0fa1%40%3Cusers.tomcat.apache.org%3E https://lists.apache.org/thread.html/rf50d02409e5732 • CWE-276: Incorrect Default Permissions •