Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache, and message broker. An integer overflow bug in Redis version 6.0 or newer, could be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. The problem is fixed in version 6.2.4 and 6.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to use ACL configuration to prevent clients from using the STRALGO LCS command. On 64 bit systems which have the fixes of CVE-2021-29477 (6.2.3 or 6.0.13), it is sufficient to make sure that the proto-max-bulk-len config parameter is smaller than 2GB (default is 512MB).
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade redis | Aug 22, 2024 | Jun 2, 2021 |
| Amazon Linux Ami 2 | — | Upgrade redis-docUpgrade redisUpgrade redis-debuginfoUpgrade redis-devel | Sep 28, 2023 | Jun 2, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 2, 2021 |
| Debian | — | Upgrade redis | Jul 30, 2024 | Jun 2, 2021 |
| Freebsd | — | Upgrade redis-develUpgrade redis | Nov 4, 2022 | Jun 1, 2021 |
| Redislabs Redis | — | Upgrade RedisLabs Redis to version 6.0.14Upgrade RedisLabs Redis to version 6.2.4 | Jun 16, 2021 | Jun 2, 2021 |
| Suse | — | Upgrade redis | Jun 7, 2021 | Jun 2, 2021 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Jun 2, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jun 2, 2021 |
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