CVE-2022-24735 – Lua scripts can be manipulated to overcome ACL rules in Redis

https://notcve.org/view.php?id=CVE-2022-24735

Redis is an in-memory database that persists on disk. By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis prior to version 7.0.0 or 6.2.7 can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. The Lua script execution environment in Redis provides some measures that prevent a script from creating side effects that persist and can affect the execution of the same, or different script, at a later time. Several weaknesses of these measures have been publicly known for a long time, but they had no security impact as the Redis security model did not endorse the concept of users or privileges. With the introduction of ACLs in Redis 6.0, these weaknesses can be exploited by a less privileged users to inject Lua code that will execute at a later time, when a privileged user executes a Lua script. • https://github.com/redis/redis/pull/10651 https://github.com/redis/redis/releases/tag/6.2.7 https://github.com/redis/redis/releases/tag/7.0.0 https://github.com/redis/redis/security/advisories/GHSA-647m-2wmq-qmvq https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4ZK3675DGHVVDOFLJN7WX6YYH27GPMK https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPYKSG7LKUJGVM2P72EHXKVRVRWHLORX https://lists.fedoraproject.org/archives/list/ • CWE-94: Improper Control of Generation of Code ('Code Injection') •