Security Bulletin
Summary
There are multiple vulnerabilities in GSKit that affect IBM Tivoli Directory Server and IBM Security Directory Server for AIX.
Vulnerability Details
CVEID: CVE-2018-1388
DESCRIPTION: GSKit V7 may disclose side channel information via discrepencies between valid and invalid PKCS#1 padding.
CVSS Base Score: 9.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/138212 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2018-1427
DESCRIPTION: IBM GSKit contains several enviornment variables that a local attacker could overflow and cause a denial of service.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139072 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2018-1426
DESCRIPTION: IBM GSKit duplicates the PRNG state across fork() system calls when multiple ICC instances are loaded which could result in duplicate Session IDs and a risk of duplicate key material.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139071 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2016-0702
DESCRIPTION: OpenSSL could allow a local attacker to obtain sensitive information, caused by a side-channel attack against a system based on the Intel Sandy-Bridge microarchitecture. An attacker could exploit this vulnerability to recover RSA keys.
CVSS Base Score: 2.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111144 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2018-1447
DESCRIPTION: The GSKit CMS KDB logic fails to salt the hash function resulting in weaker than expected protection of passwords. A weak password may be recovered. Note: After update the customer should change password to ensure the new password is stored more securely. Products should encourage customers to take this step as a high priority action.
CVSS Base Score: 5.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139972 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
Affected Products and Versions
AIX 5.3, 6.1, 7.1, 7.2
The following fileset levels (VRMF) are vulnerable, if the respective IBM Tivoli Directory Server (ITDS) or IBM Security Directory Server (ISDS) version is installed:
| Affected IBM Security Directory Server | Affected Versions |
|---|---|
| IBM Tivoli Directory Server on AIX | 6.2 - 6.2.0.55, 6.3 - 6.3.0.48 |
| IBM Security Directory Server on AIX | 6.3.1 - 6.3.1.23, 6.4 - 6.4.0.15 |
Note: To find out whether the affected ITDS or ISDS filesets are installed on your systems, refer to the lslpp command found in AIX user's guide.
Example: lslpp -L | grep -i itds
Remediation/Fixes
Note: Recommended remediation is to always install the most recent package available for the respective IBM Tivoli Directory Server or IBM Security Directory Server version.
| Affected IBM Security Directory Server | VRMF | Remediation |
|---|---|---|
| IBM Tivoli Directory Server | 6.2 - 6.2.0.55 | 6.2.0.56-ISS-ITDS-IF0056 |
| IBM Tivoli Directory Server | 6.3 - 6.3.0.48 | 6.3.0.49-ISS-ITDS-IF0049 |
| IBM Security Directory Server | 6.3.1 - 6.3.1.23 | 6.3.1.24-ISS-ISDS-IF0024 |
| IBM Security Directory Server | 6.4 - 6.4.0.15 | 6.4.0.16-ISS-ISDS-IF0016 |
Workarounds and Mitigations
None.
Get Notified about Future Security Bulletins
References
Acknowledgement
None.
*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:
02 January 2019
UID
ibm10788069