# CVE-2025-34064: OneLogin AD Connector Log S3 Bucket Hijack Leading to Cross-Tenant Data Leakage

> Attackers can hijack an unclaimed S3 bucket to intercept logs containing sensitive tokens and keys, enabling cross-tenant data leakage and user impersonation.

- **Severity:** Critical 9.0 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jul 2025
- **Updated:** 1 Jul 2025
- **Also known as:** GHSA-p59x-w56c-2jj2

## What is CVE-2025-34064?

CVE-2025-34064 is a critical vulnerability in OneLogin Active Directory Connector (ADC), published on 1 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-668 (Exposure of Resource to Wrong Sphere), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2025-34064?


## How do I fix CVE-2025-34064?

No fix has been published for CVE-2025-34064 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-34064 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34064 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34064 and fix it if it is affected.

What it is: CVE-2025-34064 is a critical vulnerability in OneLogin Active Directory Connector (ADC), published on 1 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34064 exists.

Affected product: OneLogin Active Directory Connector (ADC). No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-34064/ (Markdown: https://insights.sbomify.com/CVE-2025-34064/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34064
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34064
- OSV: https://osv.dev/vulnerability/CVE-2025-34064

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-34064/
Summaries are generated and may contain mistakes; the official description above is the record.