CVE-2021-32628

描述

Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the ziplist data structure used by all versions of Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves modifying the default ziplist configuration parameters (hash-max-ziplist-entries, hash-max-ziplist-value, zset-max-ziplist-entries or zset-max-ziplist-value) to a very large value, and then constructing specially crafted commands to create very large ziplists. The problem is fixed in Redis versions 6.2.6, 6.0.16, 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the above configuration parameters. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

如何修補 CVE-2021-32628

要修補 CVE-2021-32628,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-2021-32628 正在被利用嗎?

低 — EPSS 為 3.6%,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

參考連結(11)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2021-32628
• WEBgithub.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3
• WEBgithub.com/redis/redis/security/advisories/GHSA-vw22-qm3h-49pr
• WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/