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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2021-32762

Integer overflow that can lead to heap overflow in redis-cli, redis-sentinel on some platforms

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

redis redis

  • < 5.0.14affected
  • >= 6.0.0, < 6.0.16affected
  • >= 6.2.0, < 6.2.6affected

References