Memory corruption via overflowing Lua struct widths
Published Jun 23, 2025 · Updated Jun 23, 2025
Integer overflow in Dragonfly 1.28.18, 1.30.0, and 1.30.1 allows remote authenticated users to corrupt memory through Lua struct formats. The lua_struct.c getnum function accumulates attacker-controlled decimal field widths without an overflow check, allowing a wrapped negative size to reach stack-buffer operations. Low-privileged access with permission to run Lua code is required; exploitation can crash the server process or undermine Lua sandbox boundaries.
Summary
What happened
Integer overflow in Dragonfly 1.28.18, 1.30.0, and 1.30.1 allows remote authenticated users to corrupt memory through Lua struct formats. The lua_struct.c getnum function accumulates attacker-controlled decimal field widths without an overflow check, allowing a wrapped negative size to reach stack-buffer operations. Low-privileged access with permission to run Lua code is required; exploitation can crash the server process or undermine Lua sandbox boundaries.
The record
- CVE
- CVE-2025-52935
- Published
- Jun 23, 2025
- Updated
- Jun 23, 2025
- Vendor
- DragonflyDB
- Product
- Dragonfly
- Classifications
- CWE-190, T1499
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 23, 2025CVE publishedPublication date reported by the CVE source.
- Jun 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.28.18
- Affected versionversion=1.30.0
- Affected versionversion=1.30.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo