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...

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...

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,...

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...

K01587042: BIG-IP SPDY and HTTP/2 profile vulnerability CVE-2016-7475

Security Advisory Description Under some circumstances, the Traffic Management Microkernel TMM may not properly clean-up pool member network connections when using SPDY or HTTP/2 virtual server profiles. CVE-2016-7475 Impact In many cases, the pool members will tear down these network connections...

K94563344: HTTP/2 ALPN vulnerability CVE-2019-6619

Security Advisory Description The Traffic Management Microkernel TMM may restart when a virtual server has an HTTP/2 profile with Application Layer Protocol Negotiation ALPN enabled and it processes traffic where the ALPN extension size is zero. CVE-2019-6619 Impact BIG-IP The Traffic Management...

K98053339: HTTP/2 Ping Flood vulnerability CVE-2019-9512

Security Advisory Description Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, th...

K01988340: HTTP/2 Reset Flood vulnerability CVE-2019-9514

Security Advisory Description Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RSTSTREAM frames from the peer. Depending on...

K02591030: HTTP/2 vulnerabilities CVE-2019-9511, CVE-2019-9513, CVE-2019-9516, and CVE-2019-9517

Security Advisory Description CVE-2019-9511 Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They...

K12254802: Apache httpd HTTP/2 vulnerability CVE-2016-1546

Security Advisory Description The Apache HTTP Server 2.4.17 and 2.4.18, when modhttp2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service stream-processing outage via modified flow-control...

K10930474: TMM vulnerability CVE-2017-6155

Security Advisory Description Malformed SPDY or HTTP/2 requests may result in a disruption of service to TMM. Data plane is only exposed when a SPDY or HTTP/2 profile is attached to a virtual server. There is no control plane exposure. CVE-2017-6155 Impact An attacker may be able to disrupt traff...

K31573032: Tomcat vulnerability CVE-2020-13943

Security Advisory Description 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...

K67175700: Apache vulnerabilities CVE-2020-9490, CVE-2020-11984, CVE-2020-11993

Security Advisory Description CVE-2020-9490 Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via...

K84341091: Apache2 vulnerability CVE-2019-10081

Security Advisory Description HTTP/2 2.4.20 through 2.4.39 very early pushes, for example configured with "H2PushResource", could lead to an overwrite of memory in the pushing request's pool, leading to crashes. The memory copied is that of the configured push link header values, not data supplie...

K49160100: Apache Tomcat vulnerability CVE-2016-6817

Security Advisory Description The HTTP/2 header parser in Apache Tomcat 9.0.0.M1 to 9.0.0.M11 and 8.5.0 to 8.5.6 entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible. CVE-2016-6817 Impact There is no impact; F5...