Security features bypass in Red Hat build of MicroShift 4.15 packages

1) Security features bypass

EUVDB-ID: #VU85991

Risk: High

CVSSv4.0: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2024-21626

CWE-ID: CWE-254 - Security Features

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an internal file descriptor leak that can cause a newly-spawned container process (from runc exec) to have a working directory in the host filesystem namespace or a malicious image to allow a container process to gain access to the host filesystem through runc run. A remote attacker can trick the victim into loading a malicious image to bypass sandbox restrictions and execute arbitrary code on the host OS.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

microshift (Red Hat package): before 4.15.41-202412091343.p0.gcf9680e.assembly.4.15.41.el9

Red Hat build of MicroShift: before 4.15

Red Hat OpenShift Container Platform: before 4.15.40

CPE2.3

• cpe:2.3:a:red_hat:microshift_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
• cpe:2.3:a:red_hat:red_hat_build_of_microshift:*:*:*:*:*:*:*:*
• cpe:2.3:a:red_hat:red_hat_openshift_container_platform:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2024:10841

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.