Uninitialized memory reflection in mod_auth_digest
CVE: CVE-2017-9788
Component: httpd
CWE: CWE-456
Severity: Important
CVSS v3: 4.7/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Release date: 2017-07-11T00:00:00+00:00

It was discovered that the httpd's mod_auth_digest module did not properly initialize memory before using it when processing certain headers related to digest authentication. A remote attacker could possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash by sending specially crafted requests to a server.


Remediation:
For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically.
For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically.
For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted. The JBoss server process must be restarted for the update to take effect.
Before applying the update, back up your existing Red Hat JBoss Web Server installation (including all applications and configuration files).

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted. After installing the updated packages, the httpd daemon will be restarted automatically.
For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically.
For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically.
For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically.
For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically.
For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon will be restarted automatically. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

The References section of this erratum contains a download link (you must log in to download the update).

The JBoss server process must be restarted for the update to take effect.
Before applying the update, back up your existing Red Hat JBoss Web Server installation (including all applications and configuration files).

The References section of this erratum contains a download link (you must log in to download the update).
If you do not use digest authentication, do not load the "auth_digest_module".

For example, on RHEL 7, this can be done by commenting out or removing the
"LoadModule auth_digest_module modules/mod_auth_digest.so"
line within the /etc/httpd/conf.modules.d/00-base.conf configuration file and restarting the service.

You can then use the "httpd -t -D DUMP_MODULES" command to verify that the module is no longer loaded.