USN-3937-2: Apache vulnerabilities

10 April 2019

apache2 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 ESM

Summary

Several security issues were fixed in Apache.

Software Description

  • apache2 - Apache HTTP server

Details

USN-3937-1 and USN-3627-1 fixed several vulnerabilities in Apache. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Simon Kappel discovered that the Apache HTTP Server mod_auth_digest module incorrectly handled threads. A remote attacker with valid credentials could possibly use this issue to authenticate using another username, bypassing access control restrictions. (CVE-2019-0217)

Alex Nichols and Jakob Hirsch discovered that the Apache HTTP Server mod_authnz_ldap module incorrectly handled missing charset encoding headers. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. (CVE-2017-15710)

Robert Swiecki discovered that the Apache HTTP Server incorrectly handled certain requests. A remote attacker could possibly use this issue to cause the server to crash, leading to a denial of service. (CVE-2018-1301)

Nicolas Daniels discovered that the Apache HTTP Server incorrectly generated the nonce when creating HTTP Digest authentication challenges. A remote attacker could possibly use this issue to replay HTTP requests across a cluster of servers. (CVE-2018-1312)

Update instructions

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

Ubuntu 12.04 ESM
apache2.2-bin - 2.2.22-1ubuntu1.15

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References