ESB-2018.2957 - [Ubuntu] strongswan: Execute arbitrary code/commands - Remote/unauthenticated 2018-10-02

Printable version
PGP/GPG verifiable version

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

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

                               ESB-2018.2957
                         strongSwan vulnerability
                              2 October 2018

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

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

Product:           strongswan
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-17540  

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3774-1

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

USN-3774-1: strongSwan vulnerability

1 October 2018
strongswan vulnerability

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

    Ubuntu 18.04 LTS
    Ubuntu 16.04 LTS
    Ubuntu 14.04 LTS

Summary

strongSwan could be made to crash or run programs if it received specially 
crafted network traffic.

Software Description

    strongswan - IPsec VPN solution

Details

It was discovered that strongSwan incorrectly handled signature validation in 
the gmp plugin. A remote attacker could use this issue to cause strongSwan to 
crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 18.04 LTS
    libstrongswan - 5.6.2-1ubuntu2.3
    strongswan - 5.6.2-1ubuntu2.3
Ubuntu 16.04 LTS
    libstrongswan - 5.3.5-1ubuntu3.8
    strongswan - 5.3.5-1ubuntu3.8
Ubuntu 14.04 LTS
    libstrongswan - 5.1.2-0ubuntu2.11
    strongswan - 5.1.2-0ubuntu2.11

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

    CVE-2018-17540

- --------------------------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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=cO/r
-----END PGP SIGNATURE-----

« Back to bulletins