CVE-2025-34064
CVE-2025-34064
9.0
CriticalPublished:
Last updated:
Source:disclosure@vulncheck.com
Deferred
Weakness (CWE)
CVSS Vector
v4.0- Attack Vector
- Network
- Attack Complexity
- Low
- Attack Requirements
- Present
- Privileges Required
- None
- User Interaction
- None
- Confidentiality (Vulnerable)
- High
- Integrity (Vulnerable)
- Low
- Availability (Vulnerable)
- None
- Confidentiality (Subsequent)
- High
- Integrity (Subsequent)
- Low
- Availability (Subsequent)
- None
Description
A cloud infrastructure misconfiguration in OneLogin AD Connector results in log data being sent to a hardcoded S3 bucket (onelogin-adc-logs-production) without validating bucket ownership. An attacker who registers this unclaimed bucket can begin receiving log files from other OneLogin tenants. These logs may contain sensitive data such as directory tokens, user metadata, and environment configuration. This enables cross-tenant leakage of secrets, potentially allowing JWT signing key recovery and user impersonation.
References
disclosure@vulncheck.com
https://specterops.io/blog/2025/06/10/onelogin-many-issues-how-i-pivoted-from-a-trial-tenant-to-compromising-customer-signing-keys/disclosure@vulncheck.com
https://support.onelogin.com/product-notification/noti-00001768disclosure@vulncheck.com
https://vulncheck.com/advisories/onelogin-ad-connector-account-compromise