#VU29566 Information disclosure in Ansible and Ansible Tower - CVE-2020-1746

Vulnerability identifier: #VU29566

Vulnerability risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-1746

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Ansible
Server applications / Remote management servers, RDP, SSH
Ansible Tower
Web applications / Remote management & hosting panels

Vendor: Red Hat Inc.

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to Ansible discloses the LDAP bind password to stdout or a log file if a playbook task is written using the bind_pw in the parameters field. A local user can gain unauthorized access to sensitive information on the system.

Successful exploitation of vulnerability requires that the ldap_attr and ldap_entry community modules are used.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ansible: 2.7.0 rc1 - 2.7.16, 2.8.0 rc1 - 2.8.10, 2.9.0 rc1 - 2.9.6

Ansible Tower: 3.0 - 3.6.3

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1746
https://github.com/ansible/ansible/pull/67866

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.