ESB-2018.2988 - [Ubuntu] apache2: Denial of service - Remote/unauthenticated 2018-10-04

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2988
                    Apache HTTP Server vulnerabilities
                              4 October 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           apache2
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-11763 CVE-2018-1333 CVE-2018-1302

Reference:         ESB-2018.2435
                   ESB-2018.2392
                   ESB-2018.0881
                   ESB-2018.0845

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3783-1

- --------------------------BEGIN INCLUDED TEXT--------------------

USN-3783-1: Apache HTTP Server vulnerabilities

3 October 2018

apache2 vulnerabilities

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

  o Ubuntu 18.04 LTS

Summary

Several security issues were fixed in the Apache HTTP Server.

Software Description

  o apache2 - Apache HTTP server

Details

Robert Swiecki discovered that the Apache HTTP Server HTTP/2 module incorrectly
destroyed certain streams. A remote attacker could possibly use this issue to
cause the server to crash, leading to a denial of service. (CVE-2018-1302)

Craig Young discovered that the Apache HTTP Server HTTP/2 module incorrectly
handled certain requests. A remote attacker could possibly use this issue to
cause the server to consume resources, leading to a denial of service.
(CVE-2018-1333)

Gal Goldshtein discovered that the Apache HTTP Server HTTP/2 module incorrectly
handled large SETTINGS frames. A remote attacker could possibly use this issue
to cause the server to consume resources, leading to a denial of service.
(CVE-2018-11763)

Update instructions

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

Ubuntu 18.04 LTS
    apache2-bin - 2.4.29-1ubuntu4.4

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

  o CVE-2018-11763
  o CVE-2018-1302
  o CVE-2018-1333

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=zION
-----END PGP SIGNATURE-----

« Back to bulletins