#VU57422 Information Exposure Through an Error Message in Ansible - CVE-2021-3620

Vulnerability identifier: #VU57422

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-3620

CWE-ID: CWE-209

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ansible
Server applications / Remote management servers, RDP, SSH

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists in the Ansible Engine's ansible-connection module. The Ansible user credentials is disclosed by default in the traceback error message. A remote attacker with ability to intercept traffic can obtain user's credentials.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ansible: 2.9.0 rc1 - 2.9.26

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External links
https://access.redhat.com/errata/RHSA-2021:3871
https://bugzilla.redhat.com/show_bug.cgi?id=1975767
https://github.com/ansible/ansible/blob/v2.9.27/changelogs/CHANGELOG-v2.9.rst

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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.