CVE-2016-2110

Impact:
Moderate
Public Date:
2016-04-12
CWE:
CWE-300
Bugzilla:
1311893: CVE-2016-2110 samba: Man-in-the-middle attacks possible with NTLMSSP authentication
Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or server into sending data in plain text even if encryption was explicitly requested for that connection.

Find out more about CVE-2016-2110 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 4.3
Base Metrics AV:A/AC:M/Au:N/C:P/I:P/A:N
Access Vector Adjacent Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None

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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