Latest high severity vulnerabilities for "redhat openshift container platform" 4.8

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redhat/log4jDeserialization of untrusted data in JMSAppender in Apache Log4j 1.2

Risk 79

Severity

7.5

Input Validation

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

A flaw was found in the Java logging library Apache Log4j in version 1.x . This allows a remote attacker to execute code on the server if the deployed application is configured to use JMSAppender.

In 1.x you will find that there are two places where lookups are done - that is JMSAppender.java:207 and JMSAppender.java:222 - if you set TopicBindingName or TopicConnectionFactoryBindingName to something that JNDI can handle - for example "ldap://host:port/a" JNDI will do exactly the same thing it does for 2.x - so 1.x is vulnerable, just attack vector is "safer" as it depends on configuration rather than user input

This flaw in Log4j 2.x is tracked via CVE-2021-44228

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Source: Red Hat

Remedy

These are the possible mitigations for this flaw for releases version 1.x: - Comment out or remove JMSAppender in the Log4j configuration if it is used - Remove the JMSAppender class from the classpath. For example: ``` zip -q -d log4j-*.jar org/apache/log4j/net/JMSAppender.class ``` - Restrict access for the OS user on the platform running the application to prevent modifying the Log4j configuration by the attacker.

First published (updated )

CVE-2021-4104

redhat/kernel-rtRace Condition, Use After Free

Risk 73

Severity

Race Condition, Use After Free

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root.

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First published (updated )

CVE-2021-3609

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