CVE-2021-32626
Lua scripts can overflow the heap-based Lua stack in Redis
描述
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.
如何修補 CVE-2021-32626
要修補 CVE-2021-32626,請將受影響套件升級到下列已修補版本。
- —升級至 5.0.14-r0 或更新版本
- —升級至 5.0.14 或更新版本
- —升級至 5.0.14 或更新版本
- —升級至 5.0.14 或更新版本
CVE-2021-32626 正在被利用嗎?
中等 — EPSS 為 15.1%,可持續追蹤但非最高優先。
受影響套件(4)
- >= 2.6, < 5.0.14-r0
- >= 2.6.0, < 5.0.14, >= 6.0.0, < 6.0.16, >= 6.2.0, < 6.2.6
- >= 2.6.0, < 5.0.14, >= 6.0.0, < 6.0.16, >= 6.2.0, < 6.2.6
- >= 2.6.0, < 5.0.14, >= 6.0.0, < 6.0.16, >= 6.2.0, < 6.2.6
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
參考連結(12)
- ADVISORYsecurity.alpinelinux.org/vuln/CVE-2021-32626
- WEBgithub.com/redis/redis/commit/666ed7facf4524bf6d19b11b20faa2cf93fdf591
- WEBgithub.com/redis/redis/security/advisories/GHSA-p486-xggp-782c
- WEBlists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0%40%3Ccommits.druid.apache.org%3E