#VU23455 Cleartext transmission of sensitive information in Terraform - CVE-2019-19316

Vulnerability identifier: #VU23455

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-19316

CWE-ID: CWE-319

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Terraform
Web applications / CMS

Vendor: HashiCorp

Description

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

The vulnerability exists in the "github.com/hashicorp/terraform/tree/master/backend/remote-state/azure" due to software uses insecure communication channel to transmit sensitive information when using the Azure backend with a shared access signature (SAS). A remote attacker with ability to intercept network traffic can gain access to sensitive data, such as the token and state snapshot.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Terraform: 0.1.0 - 0.12.16

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External links
https://github.com/hashicorp/terraform/security/advisories/GHSA-4rvg-555h-r626
https://github.com/hashicorp/terraform/issues/23493

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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.