CVE-2021-32628: fallo de gravedad alta en redis
Vulnerability in handling large ziplists
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
26Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.5epss 13%
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Productos afectados
redis · redisCVEs relacionadas — redis
En el mismo producto, de las más peligrosas a las menos.
CVE-2025-49844CRITICALRedis Lua Use-After-Free may lead to remote code executionEPSS 82.6%CVE-2023-36824HIGHHeap overflow in COMMAND GETKEYS and ACL evaluation in RedisEPSS 77.4%CVE-2023-22458MEDIUMInteger overflow in multiple Redis commands can lead to denial-of-serviceEPSS 72.0%CVE-2022-36021MEDIUMRedis string pattern matching can be abused to achieve Denial of ServiceEPSS 59.8%CVE-2023-28425MEDIUMSpecially crafted MSETNX command can lead to denial-of-serviceEPSS 58.5%CVE-2022-24834HIGHHeap overflow issue with the Lua cjson library used by RedisEPSS 41.4%
Referencias
https://github.com/redis/redis/commit/f6a40570fa63d5afdd596c78083d754081d80ae3https://github.com/redis/redis/security/advisories/GHSA-vw22-qm3h-49prhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HTYQ5ZF37HNGTZWVNJD3VXP7I6MEEF42/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VL5KXFN3ATM7IIM7Q4O4PWTSRGZ5744Z/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WR5WKJWXD4D6S3DJCZ56V74ESLTDQRAB/https://security.gentoo.org/glsa/202209-17https://security.netapp.com/advisory/ntap-20211104-0003/https://www.debian.org/security/2021/dsa-5001https://www.oracle.com/security-alerts/cpuapr2022.html