Security Bulletin
Summary
Db2 is affected by multiple vulnerabilities in the GSKit library.
Vulnerability Details
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-2016-0705
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a double-free error when parsing DSA private keys. An attacker could exploit this vulnerability to corrupt memory and cause a denial of service.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111140 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2017-3732
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagating bug in the x86_64 Montgomery squaring procedure. An attacker could exploit this vulnerability to obtain information about the private key.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/121313 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2017-3736
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagation flaw in the x86_64 Montgomery squaring function bn_sqrx8x_internal(). An attacker with online access to an unpatched system could exploit this vulnerability to obtain information about the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134397 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:N/A:N)
CVEID: CVE-2018-1428
DESCRIPTION: IBM GSKit uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139073 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/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-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
All fix pack levels of IBM Db2 V9.7, V10.1, V10.5, and V11.1 editions on all platforms are affected.
Remediation/Fixes
The recommended solution is to apply the appropriate fix for this vulnerability.
FIX:
The fix for DB2 V11.1 is in V11.1.3 FP3, available for download from Fix Central.
Customers running any vulnerable fixpack level of an affected Program, V9.7, V10.1, and V10.5, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent fixpack level for each impacted release: DB2 V9.7 FP11, V10.1 FP6, and V10.5 FP9. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.
| Release | Fixed in fix pack | APAR | Download URL |
| V9.7 | TBD | IT24060 | Special Build for V9.7 FP11:
AIX 64-bit |
| V10.1 | TBD | IT24061 | Special Build for V10.1 FP6:
AIX 64-bit |
| V10.5 | FP10 | IT24058 | https://www-01.ibm.com/support/docview.wss?uid=swg24045012 |
| V11.1.3 | FP3 | IT24059 | https://www-01.ibm.com/support/docview.wss?uid=swg24044630 |
For customers running IBM data server client and driver types
Upgrading of GSKit is required if either of the following applies to you:
- IBM data server client and driver types for V9.7, V10.1 level and any V10.5 level before fixpack 5.
- IBM data server client and driver types for V10.5 fixpack 5 or later and have additionally installed GSKit.
Where to obtain the GSKit depends on the DB2 release and platform:
- IBM data server client and driver types V10.5 fix pack 5 on Inspur or Linux 64-bit POWER™ little endian on Power System, please contact customer support to obtain the "IBM DB2 Support Files for SSL Functionality".
- IBM data server client and driver types V9.7, V10.1 level and any V10.5 level before fixpack 5:
- Client and the server are on the same physical computer: For the Windows platform, you do not need to upgrade the GSKit as GSKit is automatically installed with the DB2 server image. For all other platforms, you will need to download "IBM DB2 Support Files for SSL Functionality" from IBM Passport Advantage®.
- Client and the server are on different computer: For all platforms, download "IBM DB2 Support Files for SSL Functionality" from IBM Passport Advantage® and perform the GSKit upgrade.
Refer to the following chart below for the proper version of GSKit
| Release | GSkit Version |
| V9.7 | V8.0.50.86 |
| V10.1 | V8.0.50.86 |
| V10.5 | V8.0.50.86 |
| V11.1 | V8.0.50.86 |
Workarounds and Mitigations
None.
Get Notified about Future Security Bulletins
References
Change History
March 14, 2018: Original Version Published.
March 15, 2018: Added more information about upgrading GSKit on IBM data server client and driver types.
March 23, 2018: Added CVE-2018-1447 information and published remaining platforms for V9.7.
June 11, 2018: Added CVE-2016-0702 information.
July 11, 2018: Updated 10.5 version with a link to 10.5 FP10 image.
*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:
11 July 2018
UID
swg22013756