CVE-2025-59347: Dragonfly Manager makes requests to external endpoints with disabled TLS authentication
Impact
The Manager disables TLS certificate verification in two HTTP clients (figures 3.1 and 3.2). The clients are not configurable, so users have no way to re-enable the verification.
golang func getAuthToken(ctx context.Context, header http.Header) (string, error) { [skipped] client := &http.Client{ Timeout: defaultHTTPRequesttimeout, Transport: &http.Transport{ TLSClientConfig: &tls.Config{InsecureSkipVerify: true}, }, } [skipped] }
A Manager processes dozens of preheat jobs. An adversary performs a network-level Man-in-the-Middle attack, providing invalid data to the Manager. The Manager preheats with the wrong data, which later causes a denial of service and file integrity problems.
Patches
- Dragonfy v2.1.0 and above.
Workarounds
There are no effective workarounds, beyond upgrading.
References
A third party security audit was performed by Trail of Bits, you can see the full report.
If you have any questions or comments about this advisory, please email us at dragonfly-maintainers@googlegroups.com.
Other sources
Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, The Manager disables TLS certificate verification in HTTP clients. The clients are not configurable, so users have no way to re-enable the verification. A Manager processes dozens of preheat jobs. An adversary performs a network-level Man-in-the-Middle attack, providing invalid data to the Manager. The Manager preheats with the wrong data, which later causes a denial of service and file integrity problems. This vulnerability is fixed in 2.1.0.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2025-59347?
CVE-2025-59347 is considered a high-severity vulnerability due to the disabling of TLS certificate verification in HTTP clients.
How do I fix CVE-2025-59347?
To remediate CVE-2025-59347, upgrade to Dragonfly Manager version 2.1.0 or later, where the issue is resolved.
What software is affected by CVE-2025-59347?
CVE-2025-59347 affects Dragonfly Manager versions prior to 2.1.0.
What are the implications of CVE-2025-59347?
The implications of CVE-2025-59347 include increased risk of MITM attacks due to lack of TLS verification.
Are there workarounds for CVE-2025-59347?
Currently, no workarounds exist for CVE-2025-59347; the best option is to upgrade the affected software.