Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the Netty Redis codec encoder (RedisEncoder) writes user-controlled string content directly to the network output buffer without validating or sanitizing CRLF (\r\n) characters. Since the Redis Serialization Protocol (RESP) uses CRLF as the command/response delimiter, an attacker who can control the content of a Redis message can inject arbitrary Redis commands or forge fake responses. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
Exploitability
AV:LAC:LPR:NUI:NScope
S:UImpact
C:LI:HA:N6.8/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:NOther