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CVE-2021-32626

CVE information

Published

2 years ago

Last Modified

5 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

High

Impact Analysis

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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..

CVSSv2.0 Score

Severity
Medium
Base Score
6.5/10
Exploit Score
8/10
Access Vector
Network
Access Complexity
Low
Authentication Required
Single
Impact Score
6.4/10
Confidentiality Impact
Partial
Availability Impact
Partial
Integrity Impact
Partial

CVSSv3.1 Score

Severity
High
Base Score
8.8/10
Exploit Score
2.8/10
Access Vector
Network
Access Complexity
Low
Privileges Required
Low
Impact Score
5.9/10
Confidentiality Impact
High
Availability Impact
High
Integrity Impact
High
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
  Yes
6.2.0 6.2.6
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
  Yes
6.0.0 6.0.16
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*
  Yes
2.6 5.0.14
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:management_services_for_element_software:-:
  Yes
- -
cpe:2.3:a:netapp:management_services_for_netapp_hci:-:*:*:*:
  Yes
- -
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:oracle:communications_operations_monitor:4.3:*:*:*
  Yes
- -
cpe:2.3:a:oracle:communications_operations_monitor:4.4:*:*:*
  Yes
- -
cpe:2.3:a:oracle:communications_operations_monitor:5.0:*:*:*
  Yes
- -

References