CVE-2021-3470
5.3
MEDIUM
CVSS 3.1
EPSS 0.42%
Description
A heap overflow issue was found in Redis in versions before 5.0.10, before 6.0.9 and before 6.2.0 when using a heap allocator other than jemalloc or glibc's malloc, leading to potential out of bound write or process crash. Effectively this flaw does not affect the vast majority of users, who use jemalloc or glibc malloc.
How to fix CVE-2021-3470
To remediate CVE-2021-3470, upgrade the affected package to a fixed version below.
- Alpine/redis—upgrade to 5.0.11-r0 or later
- —upgrade to 5:6.0.9-1 or later
Is CVE-2021-3470 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 5.0.11-r0
- from 0, < 5:6.0.9-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |