CVE-2016-2118

Impact:
Important
Public Date:
2016-04-12
CWE:
CWE-300
Bugzilla:
1317990: CVE-2016-2118 samba: SAMR and LSA man in the middle attacks
A protocol flaw, publicly referred to as Badlock, was found in the Security Account Manager Remote Protocol (MS-SAMR) and the Local Security Authority (Domain Policy) Remote Protocol (MS-LSAD). Any authenticated DCE/RPC connection that a client initiates against a server could be used by a man-in-the-middle attacker to impersonate the authenticated user against the SAMR or LSA service on the server. As a result, the attacker would be able to get read/write access to the Security Account Manager database, and use this to reveal all passwords or any other potentially sensitive information in that database.

Find out more about CVE-2016-2118 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 6.8
Base Metrics AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux Advanced Update Support 6.5 (samba) RHSA-2016:0619 2016-04-12
Red Hat Enterprise Linux Advanced Update Support 6.4 (samba4) RHSA-2016:0620 2016-04-12
Red Hat Enterprise Linux 5 (samba3x) RHSA-2016:0613 2016-04-12
Red Hat Enterprise Linux 7 (samba) RHSA-2016:0612 2016-04-13
Red Hat Enterprise Linux Extended Update Support 7.1 (samba) RHSA-2016:0618 2016-04-13
Red Hat Enterprise Linux Extended Update Support 6.6 (samba) RHSA-2016:0619 2016-04-12
Red Hat Gluster 3 Samba on RHEL-6 (samba) RHSA-2016:0614 2016-04-12
Red Hat Enterprise Linux 6 (samba4) RHSA-2016:0612 2016-04-13
Red Hat Enterprise Linux 6 (samba) RHSA-2016:0611 2016-04-12
Red Hat Gluster 3 Samba on RHEL-7 (samba) RHSA-2016:0614 2016-04-12
Red Hat Gluster Storage Server 3.1 on RHEL-6 (libldb) RHSA-2016:0614 2016-04-12
Red Hat Enterprise Linux Advanced Update Support 6.5 (samba4) RHSA-2016:0620 2016-04-12
Red Hat Enterprise Linux 5 (samba) RHSA-2016:0621 2016-04-12
Red Hat Enterprise Linux Advanced Update Support 6.2 (samba) RHSA-2016:0619 2016-04-12
Red Hat Enterprise Linux Long Life (v. 5.9 server) (samba) RHSA-2016:0623 2016-04-12
Red Hat Enterprise Linux Long Life (v. 5.9 server) (samba3x) RHSA-2016:0624 2016-04-12
Red Hat Enterprise Linux Advanced Update Support 6.4 (samba) RHSA-2016:0619 2016-04-12
Red Hat Enterprise Linux Extended Update Support 6.6 (samba4) RHSA-2016:0620 2016-04-12
Red Hat Enterprise Linux Advanced Update Support 6.2 (samba4) RHSA-2016:0620 2016-04-12
Red Hat Enterprise Linux Long Life (v. 5.6 server) (samba) RHSA-2016:0623 2016-04-12
Red Hat Enterprise Linux Extended Lifecycle Support 4 (samba) RHSA-2016:0625 2016-04-12
Red Hat Enterprise Linux Long Life (v. 5.6 server) (samba3x) RHSA-2016:0624 2016-04-12

Acknowledgements

Red Hat would like to thank the Samba project for reporting this issue. Upstream acknowledges Stefan Metzmacher (SerNet) as the original reporter.

External References

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