CVE-2021-32626
Assigner: GitHub_M
Published: 2021-10-04T17:30:11
State: PUBLISHED
affected: product: redis
vendor: redis
versions: status: affected
version: >= 6.2.0, < 6.2.6
status: affected
version: >= 6.0.0, < 6.0.16
status: affected
version: >= 2.6.0, < 5.0.14
descriptions: value: 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 Redis with Lua scripting support, starting from 2.6. The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14. For users unable to update an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.
metrics: cvssV3_1: attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
version: 3.1
problemTypes: descriptions: cweId: CWE-122
description: CWE-122: Heap-based Buffer Overflow
type: CWE
descriptions: cweId: CWE-787
description: CWE-787: Out-of-bounds Write
type: CWE
source: advisory: GHSA-p486-xggp-782c
discovery: UNKNOWN
title: Lua scripts can overflow the heap-based Lua stack in Redis