CVE-2023-25155 — Redis is an in-memory database that persists on disk

Redis is an in-memory database that persists on disk. Authenticated users issuing specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. This problem

01What is this vulnerability?

Redis is an in-memory database that persists on disk. Authenticated users issuing specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. This problem affects all Redis versions. Patches were released in Redis version(s) 6.0.18, 6.2.11 and 7.0.9.

02Affected products

Vendor	Product	Versions
redis	redis	< 6.0.18, >= 7.0.0, < 7.0.9, >= 6.2.0, < 6.2.11

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-03-02T03:01:36.879Z
• Last modified: 2025-03-07T18:30:41.461Z

09References

• github.com — https://github.com/redis/redis/security/advisories/GHSA-x2r7-j9vw-3w83
• github.com — https://github.com/redis/redis/commit/2a2a582e7cd99ba3b531336b8bd41df2b566e619
• github.com — https://github.com/redis/redis/releases/tag/6.0.18
• github.com — https://github.com/redis/redis/releases/tag/6.2.11
• github.com — https://github.com/redis/redis/releases/tag/7.0.9