CVE-2025-34064

OneLogin AD Connector Log S3 Bucket Hijack Leading to Cross-Tenant Data Leakage

State: Published
Severity: 9.0 Critical
Published: Jul 1, 2025
Updated: Jul 1, 2025
Reserved: Apr 15, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	9.0 Critical	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N	VulnCheck

Weaknesses

CWE-668 Exposure of Resource to Wrong Sphere
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
OneLogin Active Directory Connector (ADC)One Identity	before 6.1.5Affected

References

https://support.onelogin.com/product-notification/noti-00001768vendor-advisorypatch
https://specterops.io/blog/2025/06/10/onelogin-many-issues-how-i-pivoted-from-a-trial-tenant-to-compromising-customer-signing-keys/technical-description
https://vulncheck.com/advisories/onelogin-ad-connector-account-compromisethird-party-advisory

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