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CVE-2021-32628

Description

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.


Affected Software


CPE Name Name Version
redis:redis redis 6.2.6
redis:redis redis 6.0.16
redis:redis redis 5.0.14
fedoraproject:fedora fedoraproject fedora 33
fedoraproject:fedora fedoraproject fedora 34
fedoraproject:fedora fedoraproject fedora 35
debian:debian_linux debian debian linux 10.0
debian:debian_linux debian debian linux 11.0
netapp:management_services_for_element_software netapp management services for element software -
netapp:management_services_for_netapp_hci netapp management services for netapp hci -
oracle:communications_operations_monitor oracle communications operations monitor 4.3
oracle:communications_operations_monitor oracle communications operations monitor 4.4
oracle:communications_operations_monitor oracle communications operations monitor 5.0

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