Security Bulletin: API Connect is vulnerable to denial of service and arbitrary code execution due to Apache Log4j (CVE-2021-45105, CVE-2021-45046 and CVE-2021-44832)

Summary

Apache Log4j is used by API Connect as part of its logging and analytics infrastructure. The fix includes Apache Log4j 2.17.1 which addresses CVE-2021-45105, CVE-2021-45046 and CVE-2021-44832.

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 vulnerability now by upgrading.

IBM API Connect

V10.0.1.0 - V10.0.4.0

| V10.0.4.0-ifix1|

Addressed in IBM API Connect V10.0.4.0-ifix1

The Analytics component is impacted.

Follow this link and find the appropriate package.

<https://www.ibm.com/support/pages/node/6541170&gt;

IBM API Connect

V10.0.1.1 - V10.0.1.5

| V10.0.1.5-ifix4|

Addressed in IBM API Connect V10.0.1.5-ifix4

The analytics component is impacted.

Follow this link and find the appropriate package.

<https://www.ibm.com/support/pages/node/6540696&gt;

IBM API Connect

V2018.4.1.0 - 2018.4.1.17

| V2018.4.1.17-ifix2|

Addressed in IBM API Connect V2018.4.1.17-ifix2

he Analytics component is impacted.

Follow this link and find the appropriate package.

<https://www.ibm.com/support/pages/node/6478999&gt;

IBM API Connect

V5.0.0.0 - V5.0.8.12

| V5.0.8.13|

Addressed in IBM API Connect V5.0.8.13

The Analytics and Management components are impacted.

Follow this link and find the appropriate package.

<https://www.ibm.com/support/pages/node/6538964&gt;

Workarounds and Mitigations

None