Db2 is vulnerable to a denial of service. Db2 could allow an attacker to send specially crafted packets to the Db2 server to cause excessive memory usage and cause Db2 to terminate abnormally.
DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow an unauthenticated user to send specially crafted packets to cause a denial of service from excessive memory usage.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/173806 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
All fix pack levels of IBM Db2 V9.7, V10.1, V10.5, V11.1, and V11.5 editions on all platforms are affected.
Customers running any vulnerable fixpack level of an affected Program, V9.7, V10.1, V10.5, V11.1, V11.5 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: V9.7 FP11, V10.1 FP6, V10.5 FP10, V11.1 FP5 V11.5 GA. 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||IT31523||Special Build for V9.7 FP11:
|V10.1||TBD||IT31522||Special Build for V10.1 FP6:
|V10.5||TBD||IT31517||Special Build for V10.5 FP10:
Build for v11.1.4FP6
|V11.5||TBD||IT31520||Special Build for V11.5 GA:|
Note: Windows 32-bit and 64-bit links for Db2 V9.7 and V10.1 will be published by March, 2020.
Workarounds and Mitigations
Get Notified about Future Security Bulletins
10 March 2021: Replaced Special Build urls with the 11.1.4FP6 url
18 Feb 2020: Initial Publication
*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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10 March 2021