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.
History

Sun, 08 Sep 2024 18:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:acm:2.2::el7
cpe:/a:redhat:acm:2.4::el8

Mon, 19 Aug 2024 22:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:acm:2.2::el8
cpe:/a:redhat:acm:2.4::el8

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2021-10-04T17:35:11

Updated: 2024-08-03T23:25:30.918Z

Reserved: 2021-05-12T00:00:00

Link: CVE-2021-32628

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-10-04T18:15:08.577

Modified: 2023-11-07T03:35:19.740

Link: CVE-2021-32628

cve-icon Redhat

Severity : Important

Publid Date: 2021-10-04T00:00:00Z

Links: CVE-2021-32628 - Bugzilla