Apache Log4j2 Vulnerability Impact on Salesforce Products.

1. What is Apache Log4j2?

Apache Log4j2 is one of the widely used Java Logging Libraries.

2. What are Apache Log4j2 Vulnerabilities CVE-2021-44228 & CVE-2021-45046?

CVE-2021-44228

Apache Log4j2 2.0-beta9 through 2.12.1 and 2.13.0 through 2.15.0 JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0, this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.

CVE-2021-45046

It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input data using a JNDI Lookup pattern resulting in an information leak and remote code execution in some environments and local code execution in all environments. Log4j 2.16.0 (Java 8) and 2.12.2 (Java 7) fix this issue by removing support for message lookup patterns and disabling JNDI functionality by default.

3. Which Salesforce Products are Impacted?

Apache Log4j2 vulnerabilities CVE-2021-44228 and CVE-2021-45046 have impacted following Salesforce products:

ProductDetails
Sales CloudAdditional details are available here.
Service CloudAdditional details are available here.
Experience (Community) CloudAdditional details are available here.
B2C Commerce CloudAdditional details are available here.
Analytics CloudAdditional details are available here.
Force.comAdditional details are available here.
Social StudioAdditional details are available here.
DatoramaAdditional details are available here.
PardotAdditional details are available here.
Data.comAdditional details are available here.
HerokuAdditional details are available here.
Marketing CloudAdditional details are available here.
MuleSoft (Cloud)Additional details are available here.
MuleSoft (On-Premise)Additional details are available here
ClickSoftware (As-a-Service)Additional details are available here.
ClickSoftware (On-Premise)Additional details are available here.
Tableau (Online)Additional details are available here.
Tableau (On-Premise)Additional details are available here.
SlackAdditional details are available here.
Evergage (Interaction Studio)Additional details are available here.
QuipAdditional details are available here.
Philanthropy CloudAdditional details are available here.
AppExchangeAdditional details are available here.
Data LoaderThe Data Loader tool has been patched to address the issues currently identified in CVE-2021-44228 and CVE-2021-45046. Make sure that you are using Data Loader version 53.0.2 or later. Follow the steps described here to download the latest version of Data Loader.  

You can track latest status at: https://status.salesforce.com

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