#VU21766 Path traversal in Ansible - CVE-2019-3828

Vulnerability identifier: #VU21766

Vulnerability risk: High

CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-3828

CWE-ID: CWE-22

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 perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and copy and overwrite files outside of the specified destination in the local ansible controller host.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ansible: 2.5.0 - 2.5.14, 2.6.0 - 2.6.13, 2.7.0 - 2.7.7

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3828
https://github.com/ansible/ansible/pull/52133

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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.