CVE-2024-10041

A vulnerability was found in PAM. The secret information is stored in memory, where the attacker can trigger the victim program to execute by sending characters to its standard input (stdin). As this occurs, the attacker can train the branch predictor to execute an ROP chain speculatively. This flaw could result in leaked passwords, such as those found in /etc/shadow while performing authentications.

The PAM package as shipped in Red Hat Enterprise Linux 8 and 9 is not vulnerable to this vulnerability if SELinux is in Enforcing mode in the system.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

This vulnerability is mitigated if SELinux is in Enforcing mode.

To verify if SELinux is in Enforcing mode, the output of the getenforce command will return `Enforcing', see the example below:

$ getenforce
Enforcing

To more information about SELinux, specifically how to set it to Enforcing mode, see the links below.

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html-single/using_selinux/index#changing-to-enforcing-mode_changing-selinux-states-and-modes https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html-single/using_selinux/index#changing-to-enforcing-mode_changing-selinux-states-and-modes