USN-5090-1 fixed several vulnerabilities in Apache. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
It was discovered that the Apache HTTP Server incorrectly handled certain malformed requests. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. (CVE-2021-34798)
It was discovered that the Apache HTTP Server incorrectly handled escaping quotes. If the server was configured with third-party modules, a remote attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-39275)
It was discovered that the Apache mod_proxy module incorrectly handled certain request uri-paths. A remote attacker could possibly use this issue to cause the server to forward requests to arbitrary origin servers. (CVE-2021-40438)
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "apache2-suexec": "2.4.7-1ubuntu4.22+esm2", "apache2-suexec-pristine-dbgsym": "2.4.7-1ubuntu4.22+esm2", "libapache2-mod-proxy-html": "1:2.4.7-1ubuntu4.22+esm2", "apache2-dev": "2.4.7-1ubuntu4.22+esm2", "apache2-bin": "2.4.7-1ubuntu4.22+esm2", "apache2-suexec-custom": "2.4.7-1ubuntu4.22+esm2", "apache2-suexec-pristine": "2.4.7-1ubuntu4.22+esm2", "apache2-doc": "2.4.7-1ubuntu4.22+esm2", "apache2-mpm-event": "2.4.7-1ubuntu4.22+esm2", "apache2": "2.4.7-1ubuntu4.22+esm2", "apache2-dbg": "2.4.7-1ubuntu4.22+esm2", "apache2-utils-dbgsym": "2.4.7-1ubuntu4.22+esm2", "apache2-data": "2.4.7-1ubuntu4.22+esm2", "apache2-mpm-prefork": "2.4.7-1ubuntu4.22+esm2", "apache2-mpm-itk": "2.4.7-1ubuntu4.22+esm2", "libapache2-mod-macro": "1:2.4.7-1ubuntu4.22+esm2", "apache2-suexec-custom-dbgsym": "2.4.7-1ubuntu4.22+esm2", "apache2.2-bin": "2.4.7-1ubuntu4.22+esm2", "apache2-bin-dbgsym": "2.4.7-1ubuntu4.22+esm2", "apache2-utils": "2.4.7-1ubuntu4.22+esm2", "apache2-mpm-worker": "2.4.7-1ubuntu4.22+esm2" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "apache2-suexec-pristine-dbgsym": "2.4.18-2ubuntu3.17+esm2", "apache2-dev": "2.4.18-2ubuntu3.17+esm2", "apache2-bin": "2.4.18-2ubuntu3.17+esm2", "apache2-suexec-pristine": "2.4.18-2ubuntu3.17+esm2", "apache2-doc": "2.4.18-2ubuntu3.17+esm2", "apache2": "2.4.18-2ubuntu3.17+esm2", "apache2-dev-dbgsym": "2.4.18-2ubuntu3.17+esm2", "apache2-dbg": "2.4.18-2ubuntu3.17+esm2", "apache2-utils-dbgsym": "2.4.18-2ubuntu3.17+esm2", "apache2-data": "2.4.18-2ubuntu3.17+esm2", "apache2-dbgsym": "2.4.18-2ubuntu3.17+esm2", "apache2-suexec-custom-dbgsym": "2.4.18-2ubuntu3.17+esm2", "apache2-bin-dbgsym": "2.4.18-2ubuntu3.17+esm2", "apache2-utils": "2.4.18-2ubuntu3.17+esm2", "apache2-suexec-custom": "2.4.18-2ubuntu3.17+esm2" } ] }