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USN-4458-1: Apache HTTP Server vulnerabilities

13 August 2020

Several security issues were fixed in Apache HTTP Server.

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Releases

Packages

Details

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. (CVE-2020-1927)

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.
(CVE-2020-1934)

Felix Wilhelm discovered that the HTTP/2 implementation in Apache did not
properly handle certain Cache-Digest headers. A remote attacker could
possibly use this issue to cause Apache to crash, resulting in a denial of
service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
(CVE-2020-9490)

Felix Wilhelm discovered that the Apache mod_proxy_uwsgi module incorrectly
handled large headers. A remote attacker could use this issue to obtain
sensitive information or possibly execute arbitrary code. This issue only
affected Ubuntu 20.04 LTS. (CVE-2020-11984)

Felix Wilhelm discovered that the HTTP/2 implementation in Apache did not
properly handle certain logging statements. A remote attacker could
possibly use this issue to cause Apache to crash, resulting in a denial of
service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
(CVE-2020-11993)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-5054-1: uwsgi-plugin-psgi, uwsgi-infrastructure-plugins, uwsgi-src, libapache2-mod-uwsgi, uwsgi-plugin-jwsgi-openjdk-8, uwsgi-plugin-python3, uwsgi-plugin-graylog2, uwsgi-core, uwsgi-plugin-lua5.2, uwsgi-plugin-mono, uwsgi-plugin-curl-cron, uwsgi-plugin-rbthreads, python-uwsgidecorators, libapache2-mod-proxy-uwsgi, uwsgi-plugin-router-access, uwsgi, uwsgi-plugin-greenlet-python, uwsgi-plugin-ldap, uwsgi-plugin-asyncio-python3, uwsgi-plugin-alarm-xmpp, uwsgi-plugin-fiber, uwsgi-dev, uwsgi-plugin-gccgo, uwsgi-plugin-emperor-pg, uwsgi-plugin-asyncio-python, uwsgi-plugin-tornado-python, uwsgi-plugin-lua5.1, uwsgi-plugin-rados, uwsgi-plugin-geoip, uwsgi-plugin-servlet-openjdk-8, uwsgi-plugin-glusterfs, uwsgi-plugin-gevent-python, libapache2-mod-ruwsgi, python3-uwsgidecorators, uwsgi-plugin-jvm-openjdk-8, uwsgi-plugin-xslt, uwsgi-plugin-rack-ruby2.5, uwsgi-app-integration-plugins, uwsgi-plugin-python, uwsgi-plugins-all, uwsgi-extra, uwsgi-plugin-sqlite3, uwsgi-plugin-ring-openjdk-8, uwsgi-emperor, uwsgi-plugin-alarm-curl
  • USN-5054-2: uwsgi-plugin-psgi, uwsgi-plugin-rack-ruby2.3, uwsgi-infrastructure-plugins, uwsgi-src, uwsgi-plugin-luajit, libapache2-mod-uwsgi, uwsgi-plugin-jwsgi-openjdk-8, uwsgi-plugin-python3, uwsgi-plugin-graylog2, uwsgi-core, uwsgi-plugin-jwsgi-openjdk-7, uwsgi-plugin-lua5.2, uwsgi-plugin-mono, uwsgi-plugin-curl-cron, uwsgi-plugin-rbthreads, python-uwsgidecorators, libapache2-mod-proxy-uwsgi, uwsgi-plugin-router-access, uwsgi, uwsgi-plugin-greenlet-python, uwsgi-plugin-ldap, uwsgi-plugin-rack-ruby1.9.1, uwsgi-plugin-pyerl-python3, uwsgi-plugin-asyncio-python3, uwsgi-plugin-alarm-xmpp, uwsgi-plugin-v8, uwsgi-plugin-fiber, uwsgi-plugin-gccgo, uwsgi-plugin-emperor-pg, uwsgi-plugin-asyncio-python, uwsgi-plugin-tornado-python, uwsgi-plugin-pyerl-python, uwsgi-plugin-jvm-openjdk-7, uwsgi-plugin-jwsgi-openjdk-6, uwsgi-plugin-geoip, uwsgi-plugin-lua5.1, uwsgi-plugin-rados, uwsgi-plugin-servlet-openjdk-8, uwsgi-plugin-glusterfs, uwsgi-plugin-jvm-openjdk-6, uwsgi-plugin-gevent-python, uwsgi-plugin-php, libapache2-mod-ruwsgi, python3-uwsgidecorators, uwsgi-plugin-jvm-openjdk-8, uwsgi-plugin-erlang, uwsgi-plugin-xslt, uwsgi-app-integration-plugins, uwsgi-plugin-python, uwsgi-plugins-all, uwsgi-extra, uwsgi-plugin-sqlite3, uwsgi-plugin-ring-openjdk-8, uwsgi-emperor, uwsgi-plugin-alarm-curl