Authenticated code execution via Lua bit.tohex overflow
Published Oct 7, 2024 · Updated Nov 19, 2024
Stack-based buffer overflow in affected Redis releases allows remote authenticated users to execute code through a crafted Lua script. The embedded Lua bit.tohex function negates an attacker-controlled length before capping it at eight; INT32_MIN causes its fill loop to index outside an eight-byte stack buffer. Access to a Lua-script execution command is required, and resulting code runs with Redis process privileges.
Summary
What happened
Stack-based buffer overflow in affected Redis releases allows remote authenticated users to execute code through a crafted Lua script. The embedded Lua bit.tohex function negates an attacker-controlled length before capping it at eight; INT32_MIN causes its fill loop to index outside an eight-byte stack buffer. Access to a Lua-script execution command is required, and resulting code runs with Redis process privileges.
The record
- CVE
- CVE-2024-31449
- Published
- Oct 7, 2024
- Updated
- Nov 19, 2024
- Vendor
- Redis
- Product
- Redis
- Classifications
- CWE-20, CWE-121, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 7, 2024CVE publishedPublication date reported by the CVE source.
- Nov 19, 2024Record 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=>= 2.6, < 6.2.16
- Affected versionversion=2.6 <6.2.16
- Affected versionversion=>= 7.0.0, < 7.2.6
- Affected versionversion=7.0.0 <7.2.6
- Affected versionversion=>= 7.3.0, < 7.4.1
- Affected versionversion=7.3.0 <7.4.1
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- Upstream bit.tohex INT32_MIN regression triggerproof of concept · demonstrated
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
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