4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.001 Low
EPSS
Percentile
49.3%
Encryption with symmetric keys shorter than 128 bits is considered more vulnerable to attack than encryption with keys 128 bits or longer. Several SSL/TLS cipher suites include encryption with keys shorter than 128 bits.
Encryption with symmetric keys shorter than 128 bits is considered more vulnerable to attack than encryption with keys 128 bits or longer. Several SSL/TLS cipher suites include encryption with keys shorter than 128 bits.
Vulnerability Details:
Component | Affected Versions |
---|---|
IBM Flex System Integrated Management Module v2 (IMM2) | 1.00 to 2.00 |
IBM System x Integrated Management Module v2 (IMM2) | 1.00 to 2.50 |
IBM System x Integrated Management Module v1 (IMM1) | 1.00 to 1.41 |
IBM Flex System Manager (FSM) | 1.1.0 to 1.3.1 |
CVE ID: CVE-2013-4030
DESCRIPTION:
Encryption with symmetric keys shorter than 128 bits is considered more vulnerable to attack than encryption with keys 128 bits or longer. Several SSL/TLS cipher suites include encryption with keys shorter than 128 bits.
CVSS:
CVSS Base Score: 4.3
CVSS Temporal Score: See <http://xforce.iss.net/xforce/xfdb/86068> for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)
List the affected versions/releases/platforms, as best possible.
IBM recommends updating to the following firmware level or later. Firmware updates are available through IBM Fix Central.
Component | Recommended Version |
---|---|
IBM Flex System Integrated Management Module v2 (IMM2) | 2.60 (1AOO42Y) |
Flex System Manager version 1.3.0 also includes this fix | |
IBM System x Integrated Management Module v2 | 3.65 (1AOO50D) or newer |
IBM System x Integrated Management Module v1 (IMM1) | 1.42 (YUOOG2C) or newer |
IBM Flex System Manager (FSM) | 1.3.2 |
In the above IMM2 versions, SSL/TLS cipher suites with encryption keys shorter than 128 bits are not used in any configuration.
For the IMM1, in addition to updating to the recommended firmware version, the following configuration change is required using one of the two options described below:
Through the IMM web interface, on the IMM Security page, select โHigh Security Modeโ in the โCryptography Managementโ section.
-OR-
Use the following ASU command: asu set imm.ssl_cipher โhigh security modeโ
After configuration change, restart the IMM for the configuration to take effect.
None
Related Information:
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
None
Change History
10 September 2013: Original copy published
10 January 2014: Added information regarding additional affected products
13 June 2014: Added additional product fix available
*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 โindustry open standard designed to convey vulnerability severity and help to determine urgency and priority of response.โ IBM PROVIDES THE CVSS SCORES โAS ISโ 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.