Allocation of Resources Without Limits or Throttling

Some HTTP/2 implementations is 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 how the peer queues the RSTSTRE...

Allocation of Resources Without Limits or Throttling

Some HTTP/2 implementations is 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 how the peer queues the RSTSTRE...

Uncontrolled Resource Consumption

Some HTTP/2 implementations is 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, this can consume excess CPU,...

Oracle Linux 8 : httpd:2.4 (ELSA-2022-1915)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-1915 advisory. - Resolves: 2035030 - CVE-2021-44224 httpd:2.4/httpd: possible NULL dereference or SSRF in forward proxy configurations Tenable has extracted the...

HC Custom WP-Admin URL <= 1.4 - Unauthenticated Secret URL Disclosure

The plugin leaks the secret login URL when sending a specific crafted request curl -sIXGET -H "Cookie: validloginslug=1" https://example.com/wp-login.php HTTP/2 302 x-redirect-by: WordPress location: secret...

priority vulnerable to denial of service

A HTTP/2 implementation built using any version of the Python priority library prior to version 1.2.0 could be targeted by a malicious peer by having that peer assign priority information for every possible HTTP/2 stream ID. The priority tree would happily continue to store the priority informati...

CVE-2020-7238

A flaw was found in Netty, where it mishandles Transfer-Encoding whitespace. This flaw allows HTTP Request Smuggling. Mitigation Use HTTP/2 instead clear boundaries between requests Disable reuse of backend connections eg. http-reuse never in HAProxy or whatever equivalent LB settings...

CVE-2019-20445

A flaw was found in Netty before version 4.1.44, where it accepted multiple Content-Length headers and also accepted both Transfer-Encoding, as well as Content-Length headers where it should reject the message under such circumstances. In circumstances where Netty is used in the context of a...

CVE-2019-9512

A flaw was found in HTTP/2. Using PING frames and queuing of response PING ACK frames, a flood attack could occur resulting in unbounded memory growth. The highest threat from this vulnerability is to system availability...

GHSA-698C-2X4J-G9GQ Improper Restriction of Operations within the Bounds of a Memory Buffer in Apache Tomcat

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...

Improper Restriction of Operations within the Bounds of a Memory Buffer in Apache Tomcat

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...

Improper Limitation of a Pathname to a Restricted Directory in Apache Tomcat

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.0.M21 and 8.5.0 to 8.5.15 bypassed a number of security checks that prevented directory traversal attacks. It was therefore possible to bypass security constraints using a specially crafted URL...

GHSA-9785-W233-X6HV Improper Resource Shutdown or Release in Apache Tomcat

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 write more data. These waiting streams each...

Improper Resource Shutdown or Release in Apache Tomcat

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 write more data. These waiting streams each...

AlmaLinux 8 : httpd:2.4 (ALSA-2022:1915)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2022:1915 advisory. httpd: Request splitting via HTTP/2 method injection and modproxy CVE-2021-33193 httpd: modproxyuwsgi: out-of-bounds read via a crafted request uri-path...

RHEL 8 : httpd:2.4 (RHSA-2022:1915)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:1915 advisory. The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security Fixes: httpd: Request splittin...

Moderate: Red Hat Security Advisory: httpd:2.4 security and bug fix update

An update for the httpd:2.4 module is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

CVE-2021-44716

There's an uncontrolled resource consumption flaw in golang's net/http library in the canonicalHeader function. An attacker who submits specially crafted requests to applications linked with net/http's http2 functionality could cause excessive resource consumption that could lead to a denial of...

CVE-2021-3629

A flaw was found in Undertow. A potential security issue in flow control handling by the browser over http/2 may potentially cause overhead or a denial of service in the server. The highest threat from this vulnerability is availability...

Amazon Linux AMI : golang (ALAS-2022-1583)

The version of golang installed on the remote host is prior to 1.16.15-1.37. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2022-1583 advisory. 2024-01-03: CVE-2021-27919 was added to this advisory. An out of bounds read vulnerability was found in golang. When...