CVE-2021-41099
Integer overflow issue with strings in Redis
描述
Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the underlying string library can be used to corrupt the heap and potentially result with denial of service or remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted network payloads or commands. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. 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-2021-41099
要修補 CVE-2021-41099,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-2021-41099 正在被利用嗎?
低 — EPSS 為 3.4%,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-2021-41099
- WEBgithub.com/redis/redis/commit/c6ad876774f3cc11e32681ea02a2eead00f2c521
- WEBgithub.com/redis/redis/security/advisories/GHSA-j3cr-9h5g-6cph
- WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/