CVE-2021-32626

CVE Details

Release Date:2021-10-04

Description


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.

See more information about CVE-2021-32626 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 8.8 Base Metrics: AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector: Network Attack Complexity: Low
Privileges Required: Low User Interaction: None
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: High Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 8 (redis)ELSA-2021-39182021-10-19
Oracle Linux version 8 (redis)ELSA-2021-39452021-10-20



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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