RedisDatabase / datastore
CVE-2023-41056
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedRedis is an in-memory database that persists on disk. Redis incorrectly handles resizing of memory buffers which can result in integer overflow that leads to heap overflow and potential remote code execution. This issue has been patched in version 7.0.15 and 7.2.4.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceRedis versions before 7.0.15 and 7.2.4 contain an integer overflow vulnerability in memory buffer resizing that can lead to heap overflow and potential remote code execution. The flaw occurs during incorrect handling of buffer size calculations when resizing memory buffers.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
RedisDatabase / datastore
>= 7.0.9, < 7.0.15>= 7.2.0, < 7.2.4
FedoraOperating system
= 38= 39CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check Redis server versionRun `redis-server --version` or `redis-cli INFO server` to retrieve the installed Redis version numberAffected if The version is 7.0.9 or higher but below 7.0.15, or 7.2.0 or higher but below 7.2.4
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Confirm Redis service is runningCheck if the Redis server process is active using `ps aux | grep redis-server` or `systemctl status redis`Affected if Redis is running and serving connections - the buffer resize code path is exercised during normal Redis operations
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Verify buffer operations are in useThe vulnerability exists in the core buffer resize logic used during client communications, Lua script execution, module operations, and module API callsAffected if Any active Redis instance handling client requests triggers the vulnerable buffer resizing code path
You are affected if your running Redis version falls within 7.0.9 to 7.0.14 or 7.2.0 to 7.2.3 and the Redis service is active.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped7.0.157.2.4
Upgrade Redis to version 7.0.15 or 7.2.4 or later. Given the high CVSS score (8.1) and RCE potential, prioritize patching in production environments immediately.
Redis 7.0.15 (for 7.0.x branches) or Redis 7.2.4 (for 7.2.x branches)
- 1. Check current Redis version by running `redis-server --version` or `redis-cli INFO server`
- 2. For Redis 7.0.x users: Upgrade to version 7.0.15 or later
- 3. For Redis 7.2.x users: Upgrade to version 7.2.4 or later
- 4. On Linux systems using package managers: Run `sudo apt-get update && sudo apt-get install redis-server` (Debian/Ubuntu) or `sudo yum update redis` (RHEL/CentOS)
- 5. After upgrade, restart the Redis service: `sudo systemctl restart redis` or `sudo service redis-server restart`
- 6. Verify the upgrade was successful by running `redis-server --version` to confirm the version number
- 7. For Fedora systems: Run `sudo dnf update redis` to apply available security patches
- 8. Test that Redis is functioning correctly with `redis-cli ping` which should return PONG
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Redis
Scoped from the published advisory
- Consultation4.0 h
- Implementation2.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,872.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-41056 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-41056 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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