IBM Informix Dynamic Server could crash when a specific function is called with an out-of-range parameter within the Spatial Datablade. A user would need access to the server and the ability to execute arbitrary sql to call this function.
If you ARE NOT USING the spatial technology, you can disable usage by going to the
$INFORMIXDIR/extend directory and renaming the Spatial Datablade directory, e.g.:
mv spatial.8.22.* do.not.use
If you ARE USING the spatial technology, you will need to:
1. Download the appropriate fixed blade(s) from Fix Central
2. Follow the instructions in the embedded README file
To verify the corrected Spatial Datablade is in use, you can do the following:
$ cat $INFORMIXDIR/extend/spatial.8.22.*/include/pedef.h | grep "New at 10.8.1"
and on Windows:
$ type $INFORMIXDIR/extend/spatial.8.22.*/include/pedef.h | find "New at 10.8.1"
Description: IBM Informix spatial could allow a local user to execute commands as privileged user due to an Out-Of-Bounds write vulnerability
CVSS Base Score: 7.8
CVSS Temporal Score: see https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-2020-4799 for more information
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products and Versions
|Affected IBM Informix Dynamic Server||Affected Version|
|Informix Dynamic Server||12.10|
|Informix Dynamic Server||14.10|
|Remediation / First Fix|
|Spatial Datablade for Informix Dynamic Server||
Workarounds and Mitigations
Get Notified about Future Security Bulletins
The vulnerability was reported to IBM by Anonymous working with Trend Micro Zero Day Initiative.
07 Oct 2020: Initial Publication
08 Oct 2020: Revised 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.
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
08 October 2020