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Security Bulletin: TLS padding vulnerability affects IBM Tivoli/Security Directory Server (CVE-2014-8730)

Security Bulletin


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


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 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


Product Version

Fix level
ITDS 6.0ITDS 6.0 IFIX 73
ITDS 6.1ITDS 6.1 IFIX 65
ITDS 6.2ITDS 6.2 IFIX 41
ITDS 6.3ITDS 6.3 IFIX 34
ISDS 6.3.1ISDS 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 VersionFix level
ITDS 6.0ITDS 6.0 IFIX 72
ITDS 6.1ITDS 6.1 IFIX 64
ITDS 6.2ITDS 6.2 IFIX 40
ITDS 6.3ITDS 6.3 IFIX 33
ISDS 6.3.1ISDS 6.3.1 IFIX 7
Add the following attributes to the cn=Front End entry
of the ibmslapd.conf file

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*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.


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