#VU50428 Inclusion of Sensitive Information in Log Files in Ansible - CVE-2021-20178

Vulnerability identifier: #VU50428

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-20178

CWE-ID: CWE-532

Exploitation vector: Local

Exploit availability: No

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

Vendor: Red Hat Inc.

Description

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

The vulnerability exists due to the snmp_facts module in Ansible discloses 'authkey' and 'privkey' credentials. A local user with access to the output of playbook execution can obtain SNMP credentials.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Ansible: 2.10.0b1 - 2.10.5

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External links
https://security.archlinux.org/advisory/ASA-202102-9
https://bugzilla.redhat.com/show_bug.cgi?id=1914774
https://github.com/ansible-collections/community.general/pull/1621
https://github.com/ansible-collections/community.general/commit/fa2d2d6971d668f82207dd3e265820fdb4b0048d

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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.