CVE-2025-59048: aws plugin Auth Bypass — Fix

Description

OpenBao's AWS Plugin generates AWS access credentials based on IAM policies. Prior to version 0.1.1, the AWS Plugin is vulnerable to cross-account IAM role Impersonation in the AWS auth method. The vulnerability allows an IAM role from an untrusted AWS account to authenticate by impersonating a role with the same name in a trusted account, leading to unauthorized access. This impacts all users of the auth-aws plugin who operate in a multi-account AWS environment where IAM role names may not be unique across accounts. This vulnerability has been patched in version 0.1.1 of the auth-aws plugin. A workaround for this issue involves guaranteeing that IAM role names are unique across all AWS accounts that could potentially interact with your OpenBao environment, and to audit for any duplicate IAM roles.

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CVSS v3.1 Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-694 CWE-694

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
openbao	aws_plugin	< 0.1.1

References

Advisories & Patches

https://github.com/openbao/openbao-plugins/commit/2a77af36834746ca6d3ac9bd1049154c84b3efae https://github.com/openbao/openbao-plugins/security/advisories/GHSA-jp7h-4f3c-9rc7

Frequently Asked Questions

What is CVE-2025-59048? +

OpenBao's AWS Plugin generates AWS access credentials based on IAM policies. Prior to version 0.1.1, the AWS Plugin is vulnerable to cross-account IAM role Impersonation in the AWS auth method. The vulnerability allows an IAM role from an untrusted AWS account to authenticate by impersonating a role with the same name in a trusted account, leading to unauthorized access. This impacts all users of the auth-aws plugin who operate in a multi-account AWS environment where IAM role names may not be unique across accounts. This vulnerability has been patched in version 0.1.1 of the auth-aws plugin. A workaround for this issue involves guaranteeing that IAM role names are unique across all AWS accounts that could potentially interact with your OpenBao environment, and to audit for any duplicate IAM roles. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2025-59048? +

CVE-2025-59048 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-59048? +

CVE-2025-59048 affects products from openbao, specifically: aws_plugin. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-59048? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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