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
0.48% (76th percentile)

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  • Snyk IDSNYK-ALPINE320-REDIS-7014485
  • published23 May 2024
  • disclosed4 Oct 2021

Introduced: 4 Oct 2021

CVE-2021-32762  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-680  (opens in a new tab)

How to fix?

Upgrade Alpine:3.20 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:3.20 relevant fixed versions and status.

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.

CVSS Scores

version 3.1