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A Malformed Lua script can crash Redis

Low
yossigo published GHSA-3qpw-7686-5984 Apr 27, 2022

Package

redis (N/A)

Affected versions

All versions

Patched versions

7.0.0, 6.2.7

Description

Impact

An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result with a crash of the redis-server process. This issue affects all versions of Redis.

Patches

The problem is fixed in Redis versions 7.0.0 and 6.2.7.

Workarounds

An additional workaround to mitigate this problem without patching the redis-server executable, if Lua scripting is not being used, is to block access to SCRIPT LOAD and EVAL commands using ACL rules.

Credit

This problem has been reported by Aviv Yahav.

For more information

If you have any questions or comments about this advisory:

Severity

Low
3.3
/ 10

CVSS base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVE ID

CVE-2022-24736

Weaknesses

Credits