Authenticated code execution via Lua garbage collection
Published Jan 6, 2025 · Updated Mar 19, 2025
Use-after-free in Redis before 6.2.17, 7.2.0 through 7.2.6, and 7.4.0 through 7.4.1 allows remote authenticated users to execute code. During scriptingRelease in src/eval.c, Redis closes the Lua VM without first collecting garbage, so destructor callbacks can use user data after it has been freed. Exploitation requires permission to run a crafted Lua script through EVAL or EVALSHA and can compromise the Redis server process.
Summary
What happened
Use-after-free in Redis before 6.2.17, 7.2.0 through 7.2.6, and 7.4.0 through 7.4.1 allows remote authenticated users to execute code. During scriptingRelease in src/eval.c, Redis closes the Lua VM without first collecting garbage, so destructor callbacks can use user data after it has been freed. Exploitation requires permission to run a crafted Lua script through EVAL or EVALSHA and can compromise the Redis server process.
The record
- CVE
- CVE-2024-46981
- Published
- Jan 6, 2025
- Updated
- Mar 19, 2025
- Vendor
- Redis
- Product
- Redis
- Classifications
- CWE-416, T1059
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 6, 2025CVE publishedPublication date reported by the CVE source.
- Mar 19, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 6.2.17
- Affected versionversion=>= 7.2.0, < 7.2.7
- Affected versionversion=>= 7.4.0, < 7.4.2
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
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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