Security Bulletin
Summary
IBM Tivoli/Security Directory Server (ITDS/ISDS) are affected by a TLS padding vulnerability, which could allow a remote attacker to obtain sensitive information.
Vulnerability Details
The following vulnerability affects IBM Security Directory Server / IBM Tivoli Directory Server
CVEID: CVE-2014-8730
DESCRIPTION: IBM Security Directory Server / IBM Tivoli Directory Server could allow a remote attacker to obtain sensitive information, caused by the failure to check the contents of the padding bytes when using CBC cipher suites of some TLS implementations. A remote user with the ability to conduct a man-in-the-middle attack could exploit this vulnerability via a POODLE (Padding Oracle On Downgraded Legacy Encryption) like attack to decrypt sensitive information and calculate the plaintext of secure connections.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/99216 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM Tivoli Directory Server 6.0, 6.1, 6.2, 6.3
IBM Security Directory Server 6.3.1
Remediation/Fixes
Product Version | Fix level |
ITDS 6.0 | ITDS 6.0 IFIX 73 |
ITDS 6.1 | ITDS 6.1 IFIX 65 |
ITDS 6.2 | ITDS 6.2 IFIX 41 |
ITDS 6.3 | ITDS 6.3 IFIX 34 |
ISDS 6.3.1 | ISDS 6.3.1 IFIX 8 |
Workarounds and Mitigations
If for some reason you cannot upgrade to the version listed above you should follow the instructions here.
Insure that the version listed below is installed on the system.
Product Version | Fix level |
ITDS 6.0 | ITDS 6.0 IFIX 72 |
ITDS 6.1 | ITDS 6.1 IFIX 64 |
ITDS 6.2 | ITDS 6.2 IFIX 40 |
ITDS 6.3 | ITDS 6.3 IFIX 33 |
ISDS 6.3.1 | ISDS 6.3.1 IFIX 7 |
Add the following attributes to the cn=Front End entry of the ibmslapd.conf file ibm-slapdSetenv: GSK_STRICTCHECK_CBCPADBYTES=GSK_TRUE ibm-slapdSetenv: GSK_STRICTCHECK_CBCPADBYTES_SSL=GSK_TRUE |
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References
*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:
16 June 2018
UID
swg21692906