CVE-2021-29477
moderate-risk
Published 2021-05-04
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.
Do I need to act?
~
3.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ HIGH complexity
Affected Vendors
References (14)
Third Party Advisory
https://github.com/redis/redis/security/advisories/GHSA-vqxj-26vj-996g
Product
https://redis.io/
Third Party Advisory
https://security.gentoo.org/glsa/202107-20
Third Party Advisory
https://github.com/redis/redis/security/advisories/GHSA-vqxj-26vj-996g
Product
https://redis.io/
Third Party Advisory
https://security.gentoo.org/glsa/202107-20
38
/ 100
moderate-risk
Severity
22/34 · High
Exploitability
7/34 · Low
Exposure
9/34 · Low