CVE-2021-32627
Integer overflow issue with Streams in Redis
描述
Redis is an open source, in-memory database that persists on disk. In affected versions an integer overflow bug in Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default proto-max-bulk-len and client-query-buffer-limit configuration parameters to very large values and constructing specially crafted very large stream elements. The problem is fixed in Redis 6.2.6, 6.0.16 and 5.0.14. For users unable to upgrade an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.
如何修補 CVE-2021-32627
要修補 CVE-2021-32627,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-2021-32627 正在被利用嗎?
低 — EPSS 為 3.7%,目前沒有觀察到大規模利用活動。
受影響套件(4)
- >= 5.0.0, < 5.0.14-r0
- >= 5.0.0, < 5.0.14, >= 6.0.0, < 6.0.16, >= 6.2.0, < 6.2.6
- >= 5.0.0, < 5.0.14, >= 6.0.0, < 6.0.16, >= 6.2.0, < 6.2.6
- >= 5.0.0, < 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 | HIGH7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
參考連結(11)
- ADVISORYsecurity.alpinelinux.org/vuln/CVE-2021-32627
- WEBgithub.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3
- WEBgithub.com/redis/redis/security/advisories/GHSA-f434-69fm-g45v
- WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/