Integer Overflow or Wraparound Affecting redis package, versions <6.2.6-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.54% (79th percentile)

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  • Snyk IDSNYK-ALPINE321-REDIS-8489437
  • published6 Dec 2024
  • disclosed4 Oct 2021

Introduced: 4 Oct 2021

CVE-2021-32627  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-680  (opens in a new tab)

How to fix?

Upgrade Alpine:3.21 redis to version 6.2.6-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream redis package and not the redis package as distributed by Alpine. See How to fix? for Alpine:3.21 relevant fixed versions and status.

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.

CVSS Scores

version 3.1