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CVE-2020-11993

Status Candidate

Overview

Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.

Related Files

Red Hat Security Advisory 2021-1809-01
Posted May 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1809-01 - The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Issues addressed include a buffer overflow vulnerability.

tags | advisory, web, overflow
systems | linux, redhat
advisories | CVE-2018-17199, CVE-2020-11984, CVE-2020-11993
SHA-256 | 508be733c9b8a0a330ff51556fec043732a6fee5068c679d618e04abd920e542
Apache 2 HTTP2 Module Concurrent Pool Usage
Posted Dec 7, 2020
Authored by Google Security Research, Felix Wilhelm

Apache 2 suffers from an issue with concurrent pool usage in the http2 module.

tags | advisory
advisories | CVE-2020-11993
SHA-256 | 4ec68bf66866cfc8f4895d0ba320c5de4dece24c05a02f8d5fafd3449a9ba771
Red Hat Security Advisory 2020-4384-01
Posted Oct 28, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4384-01 - This release adds the new Apache HTTP Server 2.4.37 Service Pack 5 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 3 and includes bug fixes and enhancements. Issues addressed include buffer overflow and integer overflow vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2019-1551, CVE-2019-5435, CVE-2020-11984, CVE-2020-11993
SHA-256 | 467d98d3dc3e453dab213eac2a788f9c54641adf327662b50e225048b78e03a6
Red Hat Security Advisory 2020-4383-01
Posted Oct 28, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4383-01 - Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release adds the new Apache HTTP Server 2.4.37 Service Pack 5 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 4 and includes bug fixes and enhancements. Issues addressed include buffer overflow and integer overflow vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2019-1551, CVE-2019-5435, CVE-2020-11984, CVE-2020-11993
SHA-256 | e3fa177914caddbd671a91d6b248da680b85881080ad1c62d8b0d466e506ead0
Debian Security Advisory 4757-1
Posted Aug 31, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4757-1 - Several vulnerabilities have been found in the Apache HTTPD server.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2020-11984, CVE-2020-11993, CVE-2020-1927, CVE-2020-1934, CVE-2020-9490
SHA-256 | 477fb63b920c27e1d3a64f470a6550d15e30af94541beebdc96cfddf4a5d21a5
Ubuntu Security Notice USN-4458-1
Posted Aug 13, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4458-1 - Fabrice Perez discovered that the Apache mod_rewrite module incorrectly handled certain redirects. A remote attacker could possibly use this issue to perform redirects to an unexpected URL. Chamal De Silva discovered that the Apache mod_proxy_ftp module incorrectly handled memory when proxying to a malicious FTP server. A remote attacker could possibly use this issue to obtain sensitive information. Various other issues were also addressed.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2020-11984, CVE-2020-11993, CVE-2020-1927, CVE-2020-1934, CVE-2020-9490
SHA-256 | 4c21378f5547785a91c122ca0a869ace7a197113022d389224aa2b182dc0d3a3
Gentoo Linux Security Advisory 202008-04
Posted Aug 10, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202008-4 - Multiple vulnerabilities have been found in Apache, the worst of which could result in the arbitrary execution of code. Versions less than 2.4.46 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-11984, CVE-2020-11985, CVE-2020-11993, CVE-2020-9490
SHA-256 | f25ca354f03759bc2fecf8bdadfd483603e62658174fc6f7b80b99e8e8ebca71
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