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Security Bulletin: IBM Informix Dynamic Server is vulnerable to denial of service (CVE-2021-45105) and remote code execution (CVE-2021-45046) due to Apache Log4j

Security Bulletin


Summary

There is a vulnerability in the Apache Log4j open source library used by IBM Informix Dynamic Server for IBM Informix HQ. IBM Informix Dynamic Server is vulnerable to denial of service (CVE-2021-45105) and remote code execution (CVE-2021-45046) due to Apache Log4j. The fix is included in Apache Log4j 2.17.1.

Vulnerability Details

CVEID:   CVE-2021-45105
DESCRIPTION:   Apache Log4j is vulnerable to a denial of service, caused by the failure to protect from uncontrolled recursion from self-referential lookups. A remote attacker with control over Thread Context Map (MDC) input data could craft malicious input data that contains a recursive lookup to cause a StackOverflowError that will terminate the process. Note: The vulnerability is also called LOG4J2-3230.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215647 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)

CVEID:   CVE-2021-45046
DESCRIPTION:   Apache Log4j could result in remote code execution, caused by an incomplete fix of CVE-2021-44228 in certain non-default configurations. When the logging configuration uses a non-default Pattern Layout with a Context Lookup, an attacker with control over Thread Context Map (MDC) input data can craft malicious input data using a JNDI Lookup pattern to leak sensitive information and remote code execution in some environments and local code execution in all environments.
CVSS Base score: 9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215195 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Informix Dynamic Server14.10
IBM Informix Dynamic Server12.10

Remediation/Fixes

For 14.10 IBM Informix Dynamic Server

  1. Go to https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%7EInformation%20Management&product=ibm/Information+Management/Informix&release=14.10.FC7&platform=All&function=all
  2. Download and install the 14.10.FC7W1 version for your platform which contains the fix in InformixHQ.

For 12.10 IBM Informix Dynamic Server

  1. Go to https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%7EInformation%20Management&product=ibm/Information+Management/Informix&release=12.10.FC15W1&platform=All&function=recommended
  2. Download and install the 12.10.FC15W1 version for your platform which contains the fix in InformixHQ.

 

Customers are encouraged to take immediate action by applying the fix.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

15 Apr 2022: 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.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Document Information

Modified date:
15 April 2022

UID

ibm16572685