Redis is an open source, in-memory database that persists on disk. An integer overflow bug in the ziplist data structure used by all versions of Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves modifying the default ziplist configuration parameters (hash-max-ziplist-entries, hash-max-ziplist-value, zset-max-ziplist-entries or zset-max-ziplist-value) to a very large value, and then constructing specially crafted commands to create very large ziplists. The problem is fixed in Redis versions 6.2.6, 6.0.16, 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the above configuration parameters. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.
References
History
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MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-10-04T17:35:11
Updated: 2022-09-29T16:07:46
Reserved: 2021-05-12T00:00:00
Link: CVE-2021-32628
JSON object: View
NVD Information
Status : Modified
Published: 2021-10-04T18:15:08.577
Modified: 2023-11-07T03:35:19.740
Link: CVE-2021-32628
JSON object: View
Redhat Information
No data.