Security Bulletin
Summary
Potential DOS (Denial of Service) attack due to weak IPv4 and IPv6 sequence numbers
Vulnerability Details
CVE-ID: CVE-2011-3188
DESCRIPTION: The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service (disrupted networking) or hijack network sessions by predicting these values and sending crafted packets.
CVSS Base Score: 5.8
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/69392 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Affected Products and Versions
IBM Storwize V7000 Unified system
The product is affected when running code releases 1.3.0.0 to 1.4.0.X
Workarounds and Mitigations
Restrict access to the system's IP interface, for example using a private network or firewall technology. Only users with access to the IP interface can exploit the vulnerability.
A fix for this issue is in version 1.4.1.0 of IBM Storwize V7000 Unified system. Customers running affected version of V7000 Unified, should upgrade to 1.4.1.0 or a later version, so that the fix gets applied.
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References
Acknowledgement
None
Change History
9 May 2014: 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 Flash.
Note: According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
*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
17 April 2014: Template provided by PSIRT team. Additional wording provided by Steve White.
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Document Information
Modified date:
17 June 2018
UID
ssg1S1004664