Bzip2Decoder doesn't allow setting size restrictions for decompressed data
Impact
The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression).
All users of Bzip2Decoder are affected. The malicious input can trigger an OOME and so a DoS attack
Workarounds
No workarounds other than not using the Bzip2Decoder
References
Relevant code areas:
https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L80 https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L294 https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L305
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | io.netty:netty | all versions | no fix |
| Java / Kotlin (Maven) | io.netty:netty-codec | < 4.1.68.Final | 4.1.68.Final |
| Java / Kotlin (Maven) | org.jboss.netty:netty | all versions | no fix |
References
- https://github.com/netty/netty/security/advisories/GHSA-grg4-wf29-r9vv
- https://nvd.nist.gov/vuln/detail/CVE-2021-37136
- https://github.com/netty/netty/commit/41d3d61a61608f2223bb364955ab2045dd5e4020
- 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/Bzip2Decoder.java#L80
- https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L305
- https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L294
- https://github.com/netty/netty
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-400- Platform
- Java / Kotlin (Maven)
- Package
io.netty:netty, io.netty:netty-codec, org.jboss.netty:netty- Disclosed
- 09.09.2021
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-grg4-wf29-r9vv - CC BY 4.0
Vulnerability history: org.jboss.netty:netty
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 10.2019 12.2021
- Without a fix
- 9
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 4
- Medium 5
Disclosures per year
- 2019: 1
- 2020: 3
- 2021: 6
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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Bzip2Decoder doesn't allow setting size restrictions for decompressed data this entry
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