CVE-2021-29477
8.8
HIGH
CVSS 3.1
EPSS 3.3%
Description
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. The problem is fixed in version 6.2.3 and 6.0.13. 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.
How to fix CVE-2021-29477
To remediate CVE-2021-29477, upgrade the affected package to a fixed version below.
- —upgrade to 6.0.13-r0 or later
- —upgrade to 5:6.0.13-1 or later
Is CVE-2021-29477 being exploited?
Low — EPSS is 3.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 6.0.13-r0
- from 0, < 5:6.0.13-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |