Security Bulletin: Multiple Vulnerabilities in Apache Log4j2 affect IBM Spectrum LSF Explorer and IBM Spectrum LSF Application Center

Summary

There is a vulnerability in Apache Log4j2 used by IBM Spectrum LSF Explorer and IBM Spectrum LSF Application Center. IBM Spectrum LSF Explorer and IBM Spectrum LSF Application Center have addressed the applicable CVE. Customers are encouraged to take action by executing the mitigation steps.

Vulnerability Details

CVEID:CVE-2021-44228
**DESCRIPTION:**Apache Log4j could allow a remote attacker to execute arbitrary code on the system, caused by the failure to protect against attacker controlled LDAP and other JNDI related endpoints by JNDI features. By sending a specially crafted code string, an attacker could exploit this vulnerability to load arbitrary Java code on the server and take complete control of the system. Note: The vulnerability is also called Log4Shell or LogJam.
CVSS Base score: 10
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/214921 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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-2021-4104
**DESCRIPTION:**Apache Log4j could allow a remote attacker to execute arbitrary code on the system, caused by the deserialization of untrusted data when the attacker has write access to the Log4j configuration. If the deployed application is configured to use JMSAppender, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 8.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215048 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

Patch will be released once available.

Workarounds and Mitigations

IBM strongly recommends addressing the vulnerability now by executing these steps:

Product

|

VRMF

|

APAR

|

Remediation/First Fix

—|—|—|—

Spectrum LSF Application Center

|

10.2

|

None

|

Remove the JndiLookup.class from log4j-core-*.jar file

1). find $PMC_TOP -name “log4j-core-*.jar” -exec zip -q -d {} org/apache/logging/log4j/core/lookup/JndiLookup.class ;

2). reboot services

perfadmin stop all;perfadmin start all

pmcadmin stop;pmcadmin start

Spectrum LSF Explorer

|

10.2

|

None

|

Remove the JndiLookup.class from log4j-core-*.jar file

1). find $PMC_TOP/…/…/ -name “log4j-core-*.jar” -exec zip -q -d {} org/apache/logging/log4j/core/lookup/JndiLookup.class ;

2). reboot services

perfadmin stop all;perfadmin start all

pmcadmin stop;pmcadmin start

systemctl restart elasticsearch-for-lsf