Netty's BrotliDecoder is vulnerable to DoS via zip bomb style attack
Summary
Netty's BrotliDecoder is vulnerable to DoS via zip bomb style attack
Original description
The description as published by the source.
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In netty-codec-compression versions 4.1.124.Final and below, and netty-codec versions 4.2.4.Final and below, when supplied with specially crafted input, BrotliDecoder and certain other decompression decoders will allocate a large number of reachable byte buffers, which can lead to denial of service. BrotliDecoder.decompress has no limit in how often it calls pull, decompressing data 64K bytes at a time. The buffers are saved in the output list, and remain reachable until OOM is hit. This is fixed in versions 4.1.125.Final of netty-codec and 4.2.5.Final of netty-codec-compression.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2025-58057 netty Fixed in: 1:4.1.48-4+deb11u3
- Ubuntu UBUNTU-CVE-2025-58057 netty
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com