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CVE-2019-9511

Status Candidate

Overview

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 manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

Related Files

Red Hat Security Advisory 2019-2799-01
Posted Sep 19, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2799-01 - Nginx is a web server and a reverse proxy server for HTTP, SMTP, POP3 and IMAP protocols, with a focus on high concurrency, performance and low memory usage. Issues addressed include a denial of service vulnerability.

tags | advisory, web, denial of service, imap, protocol
systems | linux, redhat
advisories | CVE-2019-9511, CVE-2019-9513, CVE-2019-9516
MD5 | fc9157e11fa80c71b2a0a2dd56a4aa07
Red Hat Security Advisory 2019-2775-01
Posted Sep 17, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2775-01 - nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Issues addressed include a denial of service vulnerability.

tags | advisory, web, denial of service, protocol
systems | linux, redhat
advisories | CVE-2019-9511, CVE-2019-9513, CVE-2019-9516
MD5 | 6428ce2344e67686715d42b1844b369f
Red Hat Security Advisory 2019-2746-01
Posted Sep 12, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2746-01 - nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Issues addressed include a denial of service vulnerability.

tags | advisory, web, denial of service, protocol
systems | linux, redhat
advisories | CVE-2019-9511, CVE-2019-9513, CVE-2019-9516
MD5 | d8089a680da8866e7d03759fd4a389a3
Red Hat Security Advisory 2019-2745-01
Posted Sep 12, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2745-01 - nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Issues addressed include a denial of service vulnerability.

tags | advisory, web, denial of service, protocol
systems | linux, redhat
advisories | CVE-2019-9511, CVE-2019-9513, CVE-2019-9516
MD5 | b4056b0a73e8782f0c9d8c676138ea3f
Red Hat Security Advisory 2019-2692-01
Posted Sep 9, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2692-01 - libnghttp2 is a library implementing the Hypertext Transfer Protocol version 2 protocol in C. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, protocol
systems | linux, redhat
advisories | CVE-2019-9511, CVE-2019-9513
MD5 | 3aab6f0281af8f79002476b5a1f5fc25
Debian Security Advisory 4511-1
Posted Sep 2, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4511-1 - Two vulnerabilities were discovered in the HTTP/2 code of the nghttp2 HTTP server, which could result in denial of service.

tags | advisory, web, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2019-9511, CVE-2019-9513
MD5 | cf06289e4b56ab67872ad64ac12bc0c2
Debian Security Advisory 4505-1
Posted Aug 22, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4505-1 - Three vulnerabilities were discovered in the HTTP/2 code of Nginx, a high-performance web and reverse proxy server, which could result in denial of service.

tags | advisory, web, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2019-9511, CVE-2019-9513, CVE-2019-9516
MD5 | bb4b4e8de7646f4da26ac03b3dfd343e
Ubuntu Security Notice USN-4099-1
Posted Aug 15, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4099-1 - Jonathan Looney discovered that nginx incorrectly handled the HTTP/2 implementation. A remote attacker could possibly use this issue to consume resources, leading to a denial of service.

tags | advisory, remote, web, denial of service
systems | linux, ubuntu
advisories | CVE-2019-9511
MD5 | 065857c9846497d4bbb6bafa9efaa8f6
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