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Ubuntu Security Notice USN-3370-1
July 27, 2017

apache2 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 17.04
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS

Summary:

Apache HTTP Server could be made to crash or leak sensitive information if
it received specially crafted network traffic.

Software Description:
– apache2: Apache HTTP server

Details:

Robert Święcki discovered that the Apache HTTP Server mod_auth_digest
module incorrectly cleared values when processing certain requests. A
remote attacker could use this issue to cause the server to crash,
resulting in a denial or service, or possibly obtain sensitive information.

Update instructions:

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

Ubuntu 17.04:
apache2-bin 2.4.25-3ubuntu2.2

Ubuntu 16.04 LTS:
apache2-bin 2.4.18-2ubuntu3.4

Ubuntu 14.04 LTS:
apache2-bin 2.4.7-1ubuntu4.17

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

References:
https://www.ubuntu.com/usn/usn-3370-1
CVE-2017-9788

Package Information:
https://launchpad.net/ubuntu/+source/apache2/2.4.25-3ubuntu2.2
https://launchpad.net/ubuntu/+source/apache2/2.4.18-2ubuntu3.4
https://launchpad.net/ubuntu/+source/apache2/2.4.7-1ubuntu4.17

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