AIKIDO-2026-357300
vertx-redis-client is vulnerable to Denial of Service (DoS)
59
CVE Score
Medium
Denial of Service (DoS)
TL;DR
The RESP parser in vertx-redis-client appends every byte of a newline-terminated field, such as a simple string, with no length cap. A bulk string whose trailing CRLF never arrives makes the parser repeat the same buffer. A Redis server can keep sending bytes until the client runs out of heap, or can make the client emit the same response without stopping. The fix adds limits for line length and bulk-string length and stops that loop.
How do I fix this?
Upgrade the io.vertx:vertx-redis-client library to the patch version.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and the client connects to a Redis server you do not trust.
Package
Versions
4.0.0 - 4.5.35
Fixed in 4.5.365.0.0 - 5.2.2
Fixed in 5.2.3Background info
vertx-redis-client is vulnerable to Denial of Service (DoS) in versions 4.0.0 - 4.5.35 and 5.0.0 - 5.2.2.
Links
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