CVE-2022-24735
Lua scripts can be manipulated to overcome ACL rules in Redis
描述
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. The problem is fixed in Redis versions 7.0.0 and 6.2.7. An additional workaround to mitigate this problem without patching the redis-server executable, if Lua scripting is not being used, is to block access to `SCRIPT LOAD` and `EVAL` commands using ACL rules.
如何修補 CVE-2022-24735
要修補 CVE-2022-24735,請將受影響套件升級到下列已修補版本。
- —升級至 6.2.7-r0 或更新版本
- —升級至 6.2.7 或更新版本
- —升級至 6.2.7 或更新版本
- —升級至 6.2.7 或更新版本
- —未列出修補版本
CVE-2022-24735 正在被利用嗎?
低 — EPSS 為 2.2%,目前沒有觀察到大規模利用活動。
受影響套件(5)
- from 0, < 6.2.7-r0
- from 0, < 6.2.7
- from 0, < 6.2.7
- from 0, < 6.2.7
- from 0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |