8.8
CVSSv3

CVE-2021-32762

Published: 04/10/2021 Updated: 07/11/2023
CVSS v2 Base Score: 9 | Impact Score: 10 | Exploitability Score: 8
CVSS v3 Base Score: 8.8 | Impact Score: 5.9 | Exploitability Score: 2.8
VMScore: 801
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C

Vulnerability Summary

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.

Vulnerability Trend

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redis redis

debian debian linux 10.0

debian debian linux 11.0

fedoraproject fedora 33

fedoraproject fedora 34

fedoraproject fedora 35

netapp management services for element software -

netapp management services for netapp hci -

oracle communications operations monitor 4.3

oracle communications operations monitor 4.4

oracle communications operations monitor 5.0

Vendor Advisories

Multiple vulnerabilities were discovered in Redis, a persistent key-value database, which could result in denial of service or the execution of arbitrary code For the oldstable distribution (buster), these problems have been fixed in version 5:5014-1+deb10u1 For the stable distribution (bullseye), these problems have been fixed in version 5:60 ...
Redis is an open source, in-memory database that persists on disk In affected versions specially crafted Lua scripts executing in Redis can cause the heap-based Lua stack to be overflowed, due to incomplete checks for this condition This can result with heap corruption and potentially remote code execution This problem exists in all versions of ...
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 impact ...