CVE-2021-32687

描述

Redis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. 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 set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

如何修補 CVE-2021-32687

要修補 CVE-2021-32687,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-2021-32687 正在被利用嗎?

低 — EPSS 為 3.8%,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-2021-32687
• WEBgithub.com/redis/redis/commit/a30d367a71b7017581cf1ca104242a3c644dec0f
• WEBgithub.com/redis/redis/security/advisories/GHSA-m3mf-8x9w-r27q
• WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/