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References: https://github.com/redis/redis/security/advisories/GHSA-hgj8-vff2-7cjf https://nvd.nist.gov/vuln/detail/CVE-2021-21309 "Impact: An integer overflow bug in 32-bit Redis version 4.0 or newer could be exploited to corrupt the heap and potentially result with remote code execution. Redis 4.0 or newer uses a configurable limit for the maximum supported bulk input size. By default, it is 512MB which is a safe value for all platforms. If the limit is significantly increased, receiving a large request from a client may trigger several integer overflow scenarios, which would result with buffer overflow and heap corruption. We believe this could in certain conditions be exploited for remote code execution. By default, authenticated Redis users have access to all configuration parameters and can therefore use the “CONFIG SET proto-max-bulk-len” to change the safe default, making the system vulnerable. This problem only affects 32-bit Redis (on a 32-bit system, or as a 32-bit executable running on a 64-bit system). Patches The problem is fixed in version 6.2, and the fix is back ported to 6.0.11 and 5.0.11. Make sure you use one of these versions if you're running 32-bit Redis. " Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> [Peter: update to 5.0.12 to fix build on !glibc] Signed-off-by: Peter Korsgaard <peter@korsgaard.com>