Security Bulletin
Summary
Badlock is a loophole that affects Windows and Samba systems/client. Badlock for Samba is referenced by CVE-2016-2118 (SAMR and LSA man in the middle attacks possible) and for Windows by CVE-2016-0128 / MS16-047 (Windows SAM and LSAD Downgrade Vulnerability). When Samba is configured as Domain Controller it allows remote attackers to spoof the computer name of a secure channel's endpoints, and obtain sensitive session information, by running a crafted application and leveraging the ability to sniff network traffic
Vulnerability Details
Samba is used in IBM SONAS to enable file management and authentication services for Microsoft Windows environments.
CVEID: CVE-2016-2118
DESCRIPTION: Samba could allow a remote attacker to gain elevated privileges on the system, caused by the acceptance of inadequate authentication levels by the Microsoft Security Account Manager (SAM) and Local Security Authority (Domain Policy) (LSAD) remote protocols. An attacker could exploit this vulnerability using man-in-the-middle techniques to impersonate an authenticated user against the SAMR or LSAD service and gain access to the Security Account Manager (SAM) database. This vulnerability is also known as the BADLOCK bug.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111935 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
Affected Products and Versions
IBM SONAS
The product is affected when running a code releases 1.5.0.0 to 1.5.2.3
Remediation/Fixes
A fix for this issue is in version 1.5.2.4 of IBM SONAS. Customers running an affected version of SONAS should upgrade to 1.5.2.4 or a later version, so that the fix gets applied.
Please contact IBM support for assistance in upgrading your system.
Workarounds and Mitigations
Workarounds: None
Mitigation : None
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References
Change History
5 May 2016: First draft
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
17 June 2018
UID
ssg1S1005815