Security Bulletin
Summary
A fix is available for IBM SONAS, for the security issue that an attacker could execute arbitrary code on the system by exploiting a vulnerability in Samba
Vulnerability Details
IBM SONAS includes a version of Samba that is vulnerable to an unexpected code execution vulnerability in the smbd file server daemon. A remote attacker could exploit this vulnerability to execute arbitrary code on the system with root privileges.
CVEID: CVE-2015-0240
DESCRIPTION: Samba could allow a remote attacker to execute arbitrary code on the system, caused by an error in the smbd file server. By sending specially-crafted data followed by an anonymous netlogon packet, an attacker could exploit this vulnerability to trigger an uninitialized memory error and execute arbitrary code on the system with root privileges.
CVSS Base Score: 10
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/101071 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Affected Products and Versions
IBM SONAS
All products are affected when running code releases 1.3, 1.4 and 1.5 except for version 1.5.2.0 and above.
Remediation/Fixes
IBM recommends that you fix this vulnerability by upgrading affected versions of IBM SONAS to the following code level or higher:
1.5.2.0
Please contact IBM support for assistance in upgrading your system.
Workarounds and Mitigations
Workaround(s) : If you are running code release 1.5.0.0 or higher, a work around is also available. Please contact IBM support for details.
Mitigation(s) : Although IBM recommends that you install a level of code with a fix for this vulnerability, you can mitigate, although not eliminate, your risk until you have done so by ensuring that all users who have access to the system are authenticated by another security system such as a firewall.
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References
Change History
30 March 2015: First draft
20 April 2015: Final version
*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.
Internal Use Only
CQ S1058689 - [PSIRT 2880] IBM product record 49967 for SONAS and 49968 for IFS - Unauthenticated code execution attack on smbd file services.
Internal tech tip - https://dimzapp03.mainz.de.ibm.com/w_dir/SSCCWikiDB.nsf/dx/Work-around_for_Samba_vulnerability_issue_on_IBM_Storwize_V7000_Unified_%28CVE-2015-0240%29?open
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Document Information
Modified date:
17 June 2018
UID
ssg1S1005157