CVE-2020-13943

CVE-2020-13943 affects Apache Tomcat across multiple lines: 8.5.x (8.5.0–8.5.57), 9.0.x (9.0.0.M1–9.0.37), and 10.0.x (10.0.0-M1–10.0.0-M7). The flaw occurs when an HTTP/2 client exceeds the maximum concurrent streams, causing a subsequent request on the same connection to carry headers from a pr...

CVE-2020-13943

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...

EulerOS 2.0 SP9 : httpd (EulerOS-SA-2020-2175)

According to the version of the httpd packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - 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 wh...

H2Csmuggler - HTTP Request Smuggling Over HTTP/2 Cleartext (H2C)

h2cSmuggler smuggles HTTP traffic past insecure edge-server proxypass configurations by establishing HTTP/2 cleartext h2c communications with h2c-compatible back-end servers, allowing a bypass of proxy rules and access controls. See my detailed write-up below for: Technical breakdown of the...

EulerOS Virtualization for ARM 64 3.0.6.0 : httpd (EulerOS-SA-2020-2018)

According to the versions of the httpd packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - Apache HTTP server 2.4.32 to 2.4.44 modproxyuwsgi info disclosure and possible RCECVE-2020-11984 - Apache HTTP Server...

Huawei EulerOS: Security Advisory for mod_http2 (EulerOS-SA-2020-2016)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Oracle Linux 7 : olcne / nginx (ELSA-2020-5862)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5862 advisory. - Adress CVE-2019-9511 - Adress CVE-2018-16845 - Adress CVE-2017-7529 - Adress CVE-2019-9511 - Adress CVE-2018-16845 Tenable has extracted the precedin...

CVE-2020-10687

A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS...

CVE-2020-10687

A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS...

Design/Logic Flaw

A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS...

CVE-2020-10687

A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS...

CVE-2020-4579

IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 could allow a remote attacker to cause a denial of service by sending a specially crafted HTTP/2 request with invalid characters. IBM X-Force ID: 184438...

Design/Logic Flaw

IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 could allow a remote attacker to cause a denial of service by sending a chunked transfer-encoding HTTP/2 request. IBM X-Force ID: 184441...

Cross site request forgery (csrf)

IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 could allow a remote attacker to cause a denial of service by sending a specially crafted HTTP/2 request with invalid characters. IBM X-Force ID: 184438...

CVE-2020-4581

IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 could allow a remote attacker to cause a denial of service by sending a chunked transfer-encoding HTTP/2 request. IBM X-Force ID: 184441...

CVE-2020-4581

CVE-2020-4581 affects IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12, enabling a remote attacker to cause a denial of service by sending a chunked transfer-encoding HTTP/2 request. IBM’s advisory confirms remediation in 2018.4.1.13 (APAR IT33517) for DataPower Gateway, with no workaround do...

CVE-2020-4579

IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 could allow a remote attacker to cause a denial of service by sending a specially crafted HTTP/2 request with invalid characters. IBM X-Force ID: 184438...

Important: httpd

Issue Overview: Apache HTTP server 2.4.32 to 2.4.44 modproxyuwsgi info disclosure and possible RCE A flaw was found in Apache httpd in versions 2.4.32 to 2.4.46. The uwsgi protocol does not serialize more than 16K of HTTP header leading to resource exhaustion and denial of service. The highest...

Fixed in Apache Tomcat 8.5.58

Moderate: HTTP/2 request mix-up CVE-2020-13943 If an HTTP/2 client 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...

Fixed in Apache Tomcat 9.0.38

Moderate: HTTP/2 request mix-up CVE-2020-13943 If an HTTP/2 client 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...