K71436934: Apache httpd vulnerability CVE-2016-4979

Security Advisory Description The Apache HTTP Server 2.4.18 through 2.4.20, when modhttp2 and modssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveragin...

K96639388: Overview of F5 vulnerabilities (April 2021)

Security Advisory Description On April 28th, 2021, F5 announced the following security issues. This document is intended to serve as an overview of these vulnerabilities and security exposures to help determine the impact to your F5 devices. The details of each issue can be found in the associate...

K38573130: Apache Tomcat vulnerability CVE-2020-13934

Security Advisory Description 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...

K05415626: Apache HTTPD vulnerability CVE-2017-7659

Security Advisory Description A maliciously constructed HTTP/2 request could cause modhttp2 2.4.24, 2.4.25 to dereference a NULL pointer and crash the server process. CVE-2017-7659 Impact A remote attacker can use a maliciously crafted HTTP/2 request to cause an abnormal termination on the Apache...

K38453823: Apache vulnerability CVE-2021-31618

Security Advisory Description Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client...

K92665308: Apache Tomcat vulnerabilities CVE-2017-7674 and CVE-2017-7675

Security Advisory Description CVE-2017-7674 The CORS Filter in Apache Tomcat 9.0.0.M1 to 9.0.0.M21, 8.5.0 to 8.5.15, 8.0.0.RC1 to 8.0.44 and 7.0.41 to 7.0.78 did not add an HTTP Vary header indicating that the response varies depending on Origin. This permitted client and server side cache...

K44591505: Apache vulnerabilities CVE-2019-0196, CVE-2019-0197, and CVE-2019-0220

Security Advisory Description CVE-2019-0196 A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request...

K05940857: Apache Tomcat vulnerabilities CVE-2017-5650 and CVE-2017-5651

Security Advisory Description CVE-2017-5650 In Apache Tomcat 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12, the handling of an HTTP/2 GOAWAY frame for a connection did not close streams associated with that connection that were currently waiting for a WINDOWUPDATE before allowing the application to...

K65372933: BIG-IP HTTP/2 vulnerability CVE-2020-5875

Security Advisory Description Under certain conditions, the Traffic Management Microkernel TMM may generate a core file and restart while processing SSL traffic with an HTTP/2 full proxy. CVE-2020-5875 Impact If you have enabled HTTP/2, Message Routing Framework MRF, and SSL, a certain request...

K63312282: BIG-IP LTM HTTP/2 desync attacks: request line injection

Security Advisory Description Multiple desync attacks have been discovered. For more information refer to the following related articles: K27144609: Overview of HTTP/2 desync attacks K30341203: BIG-IP LTM and NGINX are not exposed to certain desync attacks K97045220: BIG-IP LTM HTTP/2 desync...

K90603426: TMM with HTTP/2 vulnerability (CVE-2021-23009)

Security Advisory Description Malformed HTTP/2 requests may cause an infinite loop which causes a Denial of Service for Data Plane traffic. TMM takes the configured HA action when the TMM process is aborted. There is no control plane exposure, this is a data plane issue only.CVE-2021-23009 Impact...

K56331254: Apache HTTP server vulnerability CVE-2021-41524

Security Advisory Description While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No...

K50233772: HTTP/2 Settings Flood vulnerability CVE-2019-9515

Security Advisory Description Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty...

K19240391: Apache Tomcat vulnerability CVE-2020-11996

Security Advisory Description A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections,...

K46011592: HTTP/2 Empty Frames Flood vulnerability CVE-2019-9518

Security Advisory Description Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or...

K94828628: Apache mod_proxy HTTP/2 vulnerability CVE-2021-33193

Security Advisory Description A crafted method sent through HTTP/2 will bypass validation and be forwarded by modproxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48. CVE-2021-33193 Impact There is no impact; F5 products are not...

K93000310: Apache Tomcat vulnerability CVE-2019-0199

Security Advisory Description The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for...

K28902827: Apache mod_http2 vulnerability CVE-2018-11763

Security Advisory Description In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not...

K45320419: TMM with HTTP/2 vulnerability CVE-2018-5514

Security Advisory Description Maliciously crafted HTTP/2 request frames can lead to denial of service. There is data plane exposure for virtual servers when the HTTP2 profile is enabled. There is no control plane exposure to this issue. CVE-2018-5514 Impact The BIG-IP system may temporarily fail ...

K02333782: BIG-IP HTTP/2 vulnerability CVE-2021-22999

Security Advisory Description The BIG-IP system provides an option to connect HTTP/2 clients to HTTP/1.x servers. When a client is slow to accept responses and it closes a connection prematurely, the BIG-IP system may indefinitely retain some streams unclosed. CVE-2021-22999 Impact A remote...