CVE-2025-59352: Dragonfly allows arbitrary file read and write on a peer machine
Impact A peer exposes the gRPC API and HTTP API for consumption by other peers. These APIs allow peers to send requests that force the recipient peer to create files in arbitrary file system locations, and to read arbitrary files. This allows peers to steal other peers’ secret data and to gain remote code execution (RCE) capabilities on the peer’s machine.
golang file, err := os.OpenFile(t.DataFilePath, os.ORDWR, defaultFileMode) if err != nil { return 0, err } defer file.Close() if , err = file.Seek(req.Range.Start, io.SeekStart); err != nil { return 0, err } n, err := io.Copy(file, io.LimitReader(req.Reader, req.Range.Length))
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 gRPC API and HTTP APIs allow peers to send requests that force the recipient peer to create files in arbitrary file system locations, and to read arbitrary files. This allows peers to steal other peers’ secret data and to gain remote code execution (RCE) capabilities on the peer’s machine.This vulnerability is fixed in 2.1.0.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2025-59352?
CVE-2025-59352 is considered a critical vulnerability due to its potential for unauthorized file access and manipulation.
How do I fix CVE-2025-59352?
To fix CVE-2025-59352, update to the latest version of Dragonfly beyond 2.1.0, where the vulnerability is addressed.
What systems are affected by CVE-2025-59352?
CVE-2025-59352 affects Dragonfly versions prior to 2.1.0.
What are the implications of exploiting CVE-2025-59352?
Exploiting CVE-2025-59352 allows intruders to create and read arbitrary files, leading to potential data theft.
Can CVE-2025-59352 be exploited remotely?
Yes, CVE-2025-59352 can be exploited remotely, allowing attackers to send requests over the gRPC and HTTP APIs.