SSH Authentication Flaw in HashiCorp Vault-SSH-Helper
CVE-2020-24359

7.5HIGH

Key Information:

Vendor

Hashicorp
Status
Vault-ssh-helper
Vendor
CVE Published:
20 August 2020

What is CVE-2020-24359?

The HashiCorp Vault-SSH-Helper tool, up to version 0.1.6, contained a vulnerability that allowed it to erroneously accept Vault-issued SSH one-time passwords (OTPs) based on the subnet of a host's network interface, instead of verifying the specific IP address assigned to that interface. This could potentially allow unauthorized access if an attacker could exploit the weak network address validation. The issue was rectified in version 0.2.0.

References

https://github.com/hashicorp/vault-ssh-helper/releases
x_refsource_MISC
https://github.com/hashicorp/vault-ssh-helper/blob/master...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.