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)

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

Remediation/Fixes

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

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 / Fixessection.