Security Bulletin: Due to the use of Apache Log4j, IBM Spectrum Conductor is vulnerable to arbitrary code execution (CVE-2021-44832 and CVE-2021-45046) and denial of service (CVE-2021-45105)

Security Bulletin

Summary

Apache Log4j is used by IBM Spectrum Conductor for generating logs in some of its components such as ELK, ascd, GUI and so on. This bulletin provides interim fixes which include Apache Log4j 2.17.1 to fix arbitrary code execution (CVE-2021-44832 and CVE-2021-45046) and denial of service (CVE-2021-45105) in IBM Spectrum Conductor.

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)

CVEID: CVE-2021-44832
DESCRIPTION: Apache Log4j could allow a remote attacker with permission to modify the logging configuration file to execute arbitrary code on the system. By constructing a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI , an attacker could exploit this vulnerability to execute remote code.
CVSS Base score: 6.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216189 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM Spectrum Conductor	2.4.1
IBM Spectrum Conductor	2.5.0
IBM Spectrum Conductor	2.5.1

Remediation/Fixes

IBM strongly recommends addressing the vulnerabilities now by upgrading the following interim fixes in the table:

Products	VRMF	APAR	Remediation/Fix
IBM Spectrum Conductor	2.4.1	P104516	sc-2.4.1-build600955
IBM Spectrum Conductor	2.5.0	P104513	sc-2.5-build600954
IBM Spectrum Conductor	2.5.1	P104512	sc-2.5.1-build600953

Workarounds and Mitigations

As detailed above in the Remediation / Fixes section.

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

10 Jan 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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Tips

Security Bulletin: Due to the use of Apache Log4j, IBM Spectrum Conductor is vulnerable to arbitrary code execution (CVE-2021-44832 and CVE-2021-45046) and denial of service (CVE-2021-45105)