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CVE-2018-20843

Status Candidate

Overview

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

Related Files

Red Hat Security Advisory 2020-2646-01
Posted Jun 22, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2646-01 - 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 3 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 2 and includes bug fixes and enhancements. Issues addressed include buffer over-read, denial of service, and memory leak vulnerabilities.

tags | advisory, web, denial of service, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2018-20843, CVE-2019-0196, CVE-2019-0197, CVE-2019-15903, CVE-2019-19956, CVE-2019-20388, CVE-2020-11080, CVE-2020-1934, CVE-2020-7595
MD5 | e83a71b4bc88543a706aad6f12cb4126
Red Hat Security Advisory 2020-2644-01
Posted Jun 22, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2644-01 - This release adds the new Apache HTTP Server 2.4.37 Service Pack 3 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 2 and includes bug fixes and enhancements. Issues addressed include buffer over-read, denial of service, and memory leak vulnerabilities.

tags | advisory, web, denial of service, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2018-20843, CVE-2019-0196, CVE-2019-0197, CVE-2019-15903, CVE-2019-19956, CVE-2019-20388, CVE-2020-11080, CVE-2020-1934, CVE-2020-7595
MD5 | a71fe6af0fb16e3610bd7a75e89e2e1a
Gentoo Linux Security Advisory 201911-08
Posted Nov 25, 2019
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201911-8 - Multiple vulnerabilities have been found in Expat, the worst of which could result in a Denial of Service condition. Versions less than 2.2.8 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2018-20843, CVE-2019-15903
MD5 | 373743d826c038b5452b68740c3704ce
Debian Security Advisory 4472-1
Posted Jun 28, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4472-1 - It was discovered that Expat, an XML parsing C library, did not properly handled XML input including XML names that contain a large number of colons, potentially resulting in denial of service.

tags | advisory, denial of service
systems | linux, debian
advisories | CVE-2018-20843
MD5 | 20ab5a65af5e963ef5f71f0f43577b78
Ubuntu Security Notice USN-4040-1
Posted Jun 26, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4040-1 - It was discovered that Expat incorrectly handled certain XML files. An attacker could possibly use this issue to cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2018-20843
MD5 | 8a2268f01692d4bc3975a03c81246d17
Ubuntu Security Notice USN-4040-2
Posted Jun 26, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4040-2 - USN-4040-1 fixed a vulnerability in expat. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. It was discovered that Expat incorrectly handled certain XML files. An attacker could possibly use this issue to cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2018-20843
MD5 | 302454310464ce3bb8cec1b3f974d24d
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