HTTP/2 Server Push: The What, How and Why

What is HTTP/2 Server Push? How does it work? Why is it valuable? If you are looking for the answers to these questions, you've come to the right place. What it is HTTP/2 h2 Server Push is one of the performance features included in version 2 of the HTTP protocol. It allows the Web server to "pus...

Information Disclosure

tomcat-coyote is vulnerable to information disclosure. The vulnerability is caused due to a regression introduced by a refactoring to widen the use of bytebuffer. Due to the flaw, when running behind a reverse proxy, the information leaks between requests on the same connection. All HTTP connecto...

Apache Tomcat denial of service vulnerability, CVE-2016-6817）

The HTTP/2 header parser entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible. This was fixed in revision 1765794. This issue was reported as 60232 on 10 October 2016 and the security implications identified by...

openSUSE Security Update : apache2 (openSUSE-2017-154)

This update for apache2 fixes the following issues : - CVE-2016-8740 Server memory can be exhausted and service denied when HTTP/2 is used bsc1013648 This update was imported from the SUSE:SLE-12-SP2:Update update project. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The descriptive text...

Apache HTTP Server 2.4.x < 2.4.25 Multiple Vulnerabilities

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Apache 2.4.x < 2.4.25 Multiple Vulnerabilities (httpoxy)

According to its banner, the version of Apache running on the remote host is 2.4.x prior to 2.4.25. It is, therefore, affected by the following vulnerabilities : - A flaw exists in the modsessioncrypto module due to encryption for data and cookies using the configured ciphers with possibly either...

PYSEC-2017-93

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-2016-6581

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK...

Design/Logic Flaw

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-2016-6580

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...

Design/Logic Flaw

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK...

CVE-2016-6581

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK...

CVE-2016-6581

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK...

PYSEC-2017-87

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK...

CVE-2016-6580

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-2016-6581

CVE-2016-6581 affects HTTP/2 implementations built with the Python HPACK library in versions 1.0.0 through 2.2.0. The vulnerability stems from an HPACK Bomb scenario: an attacker inserts a header field the size of the dynamic HPACK table into the table, then sends a header block that repeatedly e...

CVE-2016-6581

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK...

CVE-2016-6580

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-2016-6581

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK...

CVE-2016-6580

CVE-2016-6580 affects HTTP/2 implementations built with the Python priority library older than 1.2.0. The vulnerability arises when a peer can assign priority information for every HTTP/2 stream ID, allowing the priority data structure to grow without bound, consuming memory and driving extremely...