SnappyFrameDecoder doesn't restrict chunk length any may buffer skippable chunks in an unnecessary way
Impact
The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well.
This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.
Impact
All users of SnappyFrameDecoder are affected and so the application may be in risk for a DoS attach due excessive memory usage.
References
https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L79 https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L171 https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L185
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Java / Kotlin (Maven) | io.netty:netty | todas las versiones | sin corrección |
| Java / Kotlin (Maven) | io.netty:netty-codec | >= 4.0.0, < 4.1.68.Final | 4.1.68.Final |
| Java / Kotlin (Maven) | org.jboss.netty:netty | todas las versiones | sin corrección |
Referencias
- https://github.com/netty/netty/security/advisories/GHSA-9vjp-v76f-g363
- https://nvd.nist.gov/vuln/detail/CVE-2021-37137
- https://github.com/netty/netty/commit/6da4956b31023ae967451e1d94ff51a746a9194f
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.debian.org/security/2023/dsa-5316
- https://security.netapp.com/advisory/ntap-20220210-0012
- https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html
- https://lists.apache.org/thread.html/rfb2bf8597e53364ccab212fbcbb2a4e9f0a9e1429b1dc08023c6868e@%3Cdev.tinkerpop.apache.org%3E
- https://lists.apache.org/thread.html/rd262f59b1586a108e320e5c966feeafbb1b8cdc96965debc7cc10b16@%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0@%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r5e05eba32476c580412f9fbdfc9b8782d5b40558018ac4ac07192a04@%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r5406eaf3b07577d233b9f07cfc8f26e28369e6bab5edfcab41f28abb@%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r06a145c9bd41a7344da242cef07977b24abe3349161ede948e30913d@%3Ccommits.druid.apache.org%3E
- https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L79
- https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L185
- https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/SnappyFrameDecoder.java#L171
- https://github.com/netty/netty
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Debilidad (CWE)
CWE-400- Plataforma
- Java / Kotlin (Maven)
- Paquete
io.netty:netty, io.netty:netty-codec, org.jboss.netty:netty- Publicada
- 09.09.2021
- Actualizado
- 11.10.2026 12:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-9vjp-v76f-g363 - CC BY 4.0
Historial de vulnerabilidades: io.netty:netty-codec
Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 5
- Primera → última
- 09.2021 07.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 4
- Media 1
Divulgaciones por año
- 2021: 2
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 1
- 2026: 2
-
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