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-8489402
  • published6 Dec 2024
  • disclosed4 Oct 2021

Introduced: 4 Oct 2021

CVE-2021-32687  (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. 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.

CVSS Scores

version 3.1