Excessive CPU usage in HTTP/2 with small window updates

Excessive CPU usage in HTTP/2 with small window updates Severity: medium CVE-2019-9511 Not vulnerable: 1.17.3+, 1.16.1+ Vulnerable: 1.9.5-1.17.2...

Excessive CPU usage in HTTP/2 with priority changes

Excessive CPU usage in HTTP/2 with priority changes Severity: low CVE-2019-9513 Not vulnerable: 1.17.3+, 1.16.1+ Vulnerable: 1.9.5-1.17.2...

CVE-2019-9512

CVE-2019-9512 is a HTTP/2 denial-of-service issue caused by ping floods that can trigger unbounded memory/CPU growth. Connected advisories confirm concrete remediation paths across environments: for Go-based HTTP/2 stacks, upgrading Go to 1.12.8 or newer (addresses CVE-2019-9512/9514 and related ...

CVE-2019-9517

CVE-2019-9517 describes an attack against some HTTP/2 implementations where unconstrained internal data buffering can cause a denial of service. The vulnerability arises when an attacker floods a connection with a large number of requests for a large response object while manipulating HTTP/2 flow...

CVE-2019-9512

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, this can consume excess CPU,...

CVE-2019-9518 Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service

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 PUSHPROMISE. The peer spends ti...

CVE-2019-9511

CVE-2019-9511 is an HTTP/2 denial-of-service issue observed in multiple products where an attacker manipulates HTTP/2 window size and stream prioritization to force queuing of data in 1-byte chunks, potentially exhausting CPU/memory. Connected advisories confirm affected components include nginx ...

CVE-2019-9513 Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU...

CVE-2019-9513

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU...

CVE-2019-9516

Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory fo...

Excessive memory usage in HTTP/2 with zero length headers

Excessive memory usage in HTTP/2 with zero length headers Severity: low CVE-2019-9516 Not vulnerable: 1.17.3+, 1.16.1+ Vulnerable: 1.9.5-1.17.2...

CVE-2019-9518

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 PUSHPROMISE. The peer spends ti...

CVE-2019-9513

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU...

CVE-2019-9516

Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory fo...

CVE-2019-9512 Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service

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, this can consume excess CPU,...

HTTP/2 Server Denial of Service Vulnerability

A denial of service vulnerability exists in the HTTP/2 protocol stack HTTP.sys when HTTP.sys improperly parses specially crafted HTTP/2 requests. An attacker who successfully exploited the vulnerability could create a denial of service condition, causing the target system to become unresponsive. ...

HTTP/2 Server Denial of Service Vulnerability

A denial of service vulnerability exists in the HTTP/2 protocol stack HTTP.sys when HTTP.sys improperly parses specially crafted HTTP/2 requests. An attacker who successfully exploited the vulnerability could create a denial of service condition, causing the target system to become unresponsive. ...

HTTP/2 Server Denial of Service Vulnerability

A denial of service vulnerability exists in the HTTP/2 protocol stack HTTP.sys when HTTP.sys improperly parses specially crafted HTTP/2 requests. An attacker who successfully exploited the vulnerability could create a denial of service condition, causing the target system to become unresponsive. ...

HTTP/2 Server Denial of Service Vulnerability

A denial of service vulnerability exists in the HTTP/2 protocol stack HTTP.sys when HTTP.sys improperly parses specially crafted HTTP/2 requests. An attacker who successfully exploited the vulnerability could create a denial of service condition, causing the target system to become unresponsive. ...

HTTP/2 Server Denial of Service Vulnerability

A denial of service vulnerability exists in the HTTP/2 protocol stack HTTP.sys when HTTP.sys improperly parses specially crafted HTTP/2 requests. An attacker who successfully exploited the vulnerability could create a denial of service condition, causing the target system to become unresponsive. ...