CVE-2021-32762

描述

Redis is an open source, in-memory database that persists on disk. The redis-cli command line tool and redis-sentinel service may be vulnerable to integer overflow when parsing specially crafted large multi-bulk network replies. This is a result of a vulnerability in the underlying hiredis library which does not perform an overflow check before calling the calloc() heap allocation function. This issue only impacts systems with heap allocators that do not perform their own overflow checks. Most modern systems do and are therefore not likely to be affected. Furthermore, by default redis-sentinel uses the jemalloc allocator which is also not vulnerable. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14.

如何修補 CVE-2021-32762

要修補 CVE-2021-32762,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-2021-32762 正在被利用嗎?

低 — EPSS 為 2.5%,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-2021-32762
• WEBgithub.com/redis/redis/commit/0215324a66af949be39b34be2d55143232c1cb71
• WEBgithub.com/redis/redis/security/advisories/GHSA-833w-8v3m-8wwr
• WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/