It was found that when a smb client connection is used for ipc usage (e.g. as NCACN_NP transport of DCERPC) it doesn't not require smb signing by default. This allows for various man-in-the-middle attacks. Currently all Samba versions are affected. Upstream bug: https://bugzilla.samba.org/show_bug.cgi?id=11756
Acknowledgements: Name: the Samba project Upstream: Stefan Metzmacher (SerNet)
External Reference: https://access.redhat.com/articles/2243351
Public via: https://www.samba.org/samba/security/CVE-2016-2115.html
Created samba tracking bugs for this issue: Affects: fedora-all [bug 1326453]
This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Via RHSA-2016:0611 https://rhn.redhat.com/errata/RHSA-2016-0611.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Via RHSA-2016:0613 https://rhn.redhat.com/errata/RHSA-2016-0613.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 5 Via RHSA-2016:0621 https://rhn.redhat.com/errata/RHSA-2016-0621.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 5.6 Long Life Red Hat Enterprise Linux 5.9 Long Life Via RHSA-2016:0624 https://rhn.redhat.com/errata/RHSA-2016-0624.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 5.6 Long Life Red Hat Enterprise Linux 5.9 Long Life Via RHSA-2016:0623 https://rhn.redhat.com/errata/RHSA-2016-0623.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6.4 Advanced Update Support Red Hat Enterprise Linux 6.2 Advanced Update Support Red Hat Enterprise Linux 6.6 Extended Update Support Red Hat Enterprise Linux 6.5 Advanced Update Support Via RHSA-2016:0619 https://rhn.redhat.com/errata/RHSA-2016-0619.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 4 Extended Lifecycle Support Via RHSA-2016:0625 https://rhn.redhat.com/errata/RHSA-2016-0625.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 6.6 Extended Update Support Red Hat Enterprise Linux 6.5 Advanced Update Support Red Hat Enterprise Linux 6.4 Advanced Update Support Red Hat Enterprise Linux 6.2 Advanced Update Support Via RHSA-2016:0620 https://rhn.redhat.com/errata/RHSA-2016-0620.html
This issue has been addressed in the following products: Red Hat Gluster Storage 3.1 for RHEL 7 Red Hat Gluster Storage 3.1 for RHEL 6 Via RHSA-2016:0614 https://rhn.redhat.com/errata/RHSA-2016-0614.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 6 Via RHSA-2016:0612 https://rhn.redhat.com/errata/RHSA-2016-0612.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 7.1 Extended Update Support Via RHSA-2016:0618 https://rhn.redhat.com/errata/RHSA-2016-0618.html
samba-4.3.8-0.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
samba-4.2.11-0.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
(In reply to errata-xmlrpc from comment #14) > This issue has been addressed in the following products: > > Red Hat Enterprise Linux 5 > > Via RHSA-2016:0621 https://rhn.redhat.com/errata/RHSA-2016-0621.html This bug is associated with CVE-2016-2115 (https://access.redhat.com/security/cve/cve-2016-2115) which doesn't indicate resolution for Red Hat 5. The fix page indicated above (https://rhn.redhat.com/errata/RHSA-2016-0621.html) does not list that it addresses CVE-2016-2115. Is this issue really resolved in Red Hat 5?
samba-4.4.2-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.