CVE-2021-32626
Lua scripts can overflow the heap-based Lua stack in Redis
- State
- Published
- Severity
- 7.5 High
- Published
- Oct 4, 2021
- Updated
- Aug 3, 2024
- Reserved
- May 12, 2021
Description
Redis is an open source, in-memory database that persists on disk. In affected versions specially crafted Lua scripts executing in Redis can cause the heap-based Lua stack to be overflowed, due to incomplete checks for this condition. This can result with heap corruption and potentially remote code execution. This problem exists in all versions of Redis with Lua scripting support, starting from 2.6. The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14. For users unable to update an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
redisredis |
|
References
- https://github.com/redis/redis/security/advisories/GHSA-p486-xggp-782c
- https://github.com/redis/redis/commit/666ed7facf4524bf6d19b11b20faa2cf93fdf591
- FEDORA-2021-8913c7900cvendor-advisory
- FEDORA-2021-61c487f241vendor-advisory
- [druid-commits] 20211025 [GitHub] [druid] jihoonson opened a new pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3mailing-list
- FEDORA-2021-aa94492a09vendor-advisory
- DSA-5001vendor-advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://security.netapp.com/advisory/ntap-20211104-0003/
- GLSA-202209-17vendor-advisory
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