SB2024020871 - Multiple vulnerabilities in HashiCorp Nomad

Description

This security bulletin contains information about 2 vulnerabilities.

1) Security features bypass (CVE-ID: CVE-2024-21626)

CWE-ID: CWE-254 - Security Features

CVSSv4: 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

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.

2) UNIX symbolic link following (CVE-ID: CVE-2024-1329)

CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a symlink following issue. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Successful exploitation of this vulnerability may result in privilege escalation.

Remediation

Install update from vendor's website.

References

• https://github.com/hashicorp/nomad/releases/tag/v1.5.14
• https://github.com/hashicorp/nomad/releases/tag/v1.6.7
• https://github.com/hashicorp/nomad/releases/tag/v1.7.4
• https://github.com/hashicorp/nomad/issues/19888