{"id":"GHSA-grg4-wf29-r9vv","summary":"Bzip2Decoder doesn't allow setting size restrictions for decompressed data","details":"### Impact\nThe Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression).\n\n\nAll users of Bzip2Decoder are affected. The malicious input can trigger an OOME and so a DoS attack\n\n### Workarounds\nNo workarounds other than not using the `Bzip2Decoder`\n\n### References\n\nRelevant code areas:\n\nhttps://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L80\nhttps://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L294\nhttps://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L305","aliases":["CVE-2021-37136"],"modified":"2026-07-08T06:29:40.316185909Z","published":"2021-09-09T17:11:21Z","database_specific":{"nvd_published_at":"2021-10-19T15:15:00Z","severity":"HIGH","cwe_ids":["CWE-400"],"github_reviewed_at":"2021-09-09T14:36:56Z","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/netty/netty/security/advisories/GHSA-grg4-wf29-r9vv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37136"},{"type":"WEB","url":"https://github.com/netty/netty/commit/41d3d61a61608f2223bb364955ab2045dd5e4020"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujan2022.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"WEB","url":"https://www.debian.org/security/2023/dsa-5316"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20220210-0012"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfb2bf8597e53364ccab212fbcbb2a4e9f0a9e1429b1dc08023c6868e@%3Cdev.tinkerpop.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rd262f59b1586a108e320e5c966feeafbb1b8cdc96965debc7cc10b16@%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r75490c61c2cb7b6ae2c81238fd52ae13636c60435abcd732d41531a0@%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r5e05eba32476c580412f9fbdfc9b8782d5b40558018ac4ac07192a04@%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r5406eaf3b07577d233b9f07cfc8f26e28369e6bab5edfcab41f28abb@%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r06a145c9bd41a7344da242cef07977b24abe3349161ede948e30913d@%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L80"},{"type":"WEB","url":"https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L305"},{"type":"WEB","url":"https://github.com/netty/netty/blob/4.1/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L294"},{"type":"PACKAGE","url":"https://github.com/netty/netty"}],"affected":[{"package":{"name":"io.netty:netty-codec","ecosystem":"Maven","purl":"pkg:maven/io.netty/netty-codec"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.68.Final"}]}],"versions":["4.0.0.Alpha1","4.0.0.Alpha2","4.0.0.Alpha3","4.0.0.Alpha4","4.0.0.Alpha5","4.0.0.Alpha6","4.0.0.Alpha7","4.0.0.Alpha8","4.0.0.Beta1","4.0.0.Beta2","4.0.0.Beta3","4.0.0.CR1","4.0.0.CR2","4.0.0.CR3","4.0.0.CR4","4.0.0.CR5","4.0.0.CR6","4.0.0.CR7","4.0.0.CR8","4.0.0.CR9","4.0.0.Final","4.0.1.Final","4.0.10.Final","4.0.11.Final","4.0.12.Final","4.0.13.Final","4.0.14.Beta1","4.0.14.Final","4.0.15.Final","4.0.16.Final","4.0.17.Final","4.0.18.Final","4.0.19.Final","4.0.2.Final","4.0.20.Final","4.0.21.Final","4.0.22.Final","4.0.23.Final","4.0.24.Final","4.0.25.Final","4.0.26.Final","4.0.27.Final","4.0.28.Final","4.0.29.Final","4.0.3.Final","4.0.30.Final","4.0.31.Final","4.0.32.Final","4.0.33.Final","4.0.34.Final","4.0.35.Final","4.0.36.Final","4.0.37.Final","4.0.38.Final","4.0.39.Final","4.0.4.Final","4.0.40.Final","4.0.41.Final","4.0.42.Final","4.0.43.Final","4.0.44.Final","4.0.45.Final","4.0.46.Final","4.0.47.Final","4.0.48.Final","4.0.49.Final","4.0.5.Final","4.0.50.Final","4.0.51.Final","4.0.52.Final","4.0.53.Final","4.0.54.Final","4.0.55.Final","4.0.56.Final","4.0.6.Final","4.0.7.Final","4.0.8.Final","4.0.9.Final","4.1.0.Beta1","4.1.0.Beta2","4.1.0.Beta3","4.1.0.Beta4","4.1.0.Beta5","4.1.0.Beta6","4.1.0.Beta7","4.1.0.Beta8","4.1.0.CR1","4.1.0.CR2","4.1.0.CR3","4.1.0.CR4","4.1.0.CR5","4.1.0.CR6","4.1.0.CR7","4.1.0.Final","4.1.1.Final","4.1.10.Final","4.1.11.Final","4.1.12.Final","4.1.13.Final","4.1.14.Final","4.1.15.Final","4.1.16.Final","4.1.17.Final","4.1.18.Final","4.1.19.Final","4.1.2.Final","4.1.20.Final","4.1.21.Final","4.1.22.Final","4.1.23.Final","4.1.24.Final","4.1.25.Final","4.1.26.Final","4.1.27.Final","4.1.28.Final","4.1.29.Final","4.1.3.Final","4.1.30.Final","4.1.31.Final","4.1.32.Final","4.1.33.Final","4.1.34.Final","4.1.35.Final","4.1.36.Final","4.1.37.Final","4.1.38.Final","4.1.39.Final","4.1.4.Final","4.1.40.Final","4.1.41.Final","4.1.42.Final","4.1.43.Final","4.1.44.Final","4.1.45.Final","4.1.46.Final","4.1.47.Fina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