{"schema_version":"1.8.0","id":"CVE-2020-11612","published":"2020-04-07T18:15:13.697Z","modified":"2026-08-07T11:31:23.670977353Z","aliases":["GHSA-mm9x-g8pc-w292"],"related":["SUSE-SU-2022:3617-1","SUSE-SU-2022:3760-1","SUSE-SU-2022:3793-1","openSUSE-SU-2024:11085-1"],"details":"The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/netty/netty","events":[{"introduced":"446b38db5220a3934064ee4e26f40d81dfa6b714"},{"fixed":"ebe7af510228f9c6b7f1aff4725ceac85f1e9cc3"}],"database_specific":{"cpe":"cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.1"},{"fixed":"4.1.46"}],"source":"CPE_RANGE"}}],"versions":["netty-4.1.45.Final","netty-4.1.44.Final","netty-4.1.43.Final","netty-4.1.42.Final","netty-4.1.41.Final","netty-4.1.40.Final","netty-4.1.39.Final","netty-4.1.38.Final","netty-4.1.37.Final","netty-4.1.36.Final","netty-4.1.35.Final","netty-4.1.34.Final","netty-4.1.33.Final","netty-4.1.32.Final","netty-4.1.31.Final","netty-4.1.30.Final","netty-4.1.29.Final","netty-4.1.28.Final","netty-4.1.27.Final","netty-4.1.26.Final","netty-4.1.25.Final","netty-4.1.24.Final","netty-4.1.23.Final","netty-4.1.22.Final","netty-4.1.21.Final","netty-4.1.20.Final","netty-4.1.19.Final","netty-4.1.18.Final","netty-4.1.17.Final","netty-4.1.16.Final","netty-4.1.15.Final","netty-4.1.14.Final","netty-4.1.13.Final","netty-4.1.12.Final","netty-4.1.11.Final","netty-4.1.10.Final","netty-4.1.9.Final","netty-4.1.8.Final","netty-4.1.7.Final","netty-4.1.6.Final","netty-4.1.5.Final","netty-4.1.4.Final","netty-4.1.3.Final","netty-4.1.2.Final","netty-4.1.1.Final","netty-4.1.0.Final"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-11612.json"}}],"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r14446ed58208cb6d97b6faa6ebf145f1cf2c70c0886c0c133f4d3b6f%40%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r255ed239e65d0596812362adc474bee96caf7ba042c7ad2f3c62cec7%40%3Cissues.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r281882fdf9ea89aac02fd2f92786693a956aac2ce9840cce87c7df6b%40%3Ccommits.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r2958e4d49ee046e1e561e44fdc114a0d2285927501880f15852a9b53%40%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r31424427cc6d7db46beac481bdeed9a823fc20bb1b9deede38557f71%40%3Cnotifications.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r3195127e46c87a680b5d1d3733470f83b886bfd3b890c50df718bed1%40%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r3ea4918d20d0c1fa26cac74cc7cda001d8990bc43473d062867ef70d%40%3Cnotifications.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r4a7e4e23bd84ac24abf30ab5d5edf989c02b555e1eca6a2f28636692%40%3Cnotifications.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r4f4a14d6a608db447b725ec2e96c26ac9664d83cd879aa21e2cfeb24%40%3Cnotifications.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r5030cd8ea5df1e64cf6a7b633eff145992fbca03e8bfc687cd2427ab%40%3Cnotifications.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r5a0b1f0b1c3bcd66f5177fbd6f6de2d0f8cae24a13ab2669f274251a%40%3Cnotifications.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r5b1ad61552591b747cd31b3a908d5ff2e8f2a8a6847583dd6b7b1ee7%40%3Cissues.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r69b23a94d4ae45394cabae012dd1f4a963996869c44c478eb1c61082%40%3Ccommits.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r7641ee788e1eb1be4bb206a7d15f8a64ec6ef23e5ec6132d5a567695%40%3Cnotifications.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r7790b9d99696d9eddce8a8c96f13bb68460984294ea6fea3800143e4%40%3Ccommits.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r7836bbdbe95c99d4d725199f0c169927d4e87ba57e4beeeb699c097a%40%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r832724df393a7ef25ca4c7c2eb83ad2d6c21c74569acda5233f9f1ec%40%3Ccommits.pulsar.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r866288c2ada00ce148b7307cdf869f15f24302b3eb2128af33830997%40%3Ccommits.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r88e2b91560c065ed67e62adf8f401c417e4d70256d11ea447215a70c%40%3Cissues.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8a654f11e1172b0effbfd6f8d5b6ca651ae4ac724a976923c268a42f%40%3Ccommits.druid.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r9addb580456807cd11d6f0c6b6373b7d7161d06d2278866c30c7febb%40%3Ccommits.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r9c30b7fca4baedebcb46d6e0f90071b30cc4a0e074164d50122ec5ec%40%3Ccommits.zookeeper.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/ra98e3a8541a09271f96478d5e22c7e3bd1afdf48641c8be25d62d9f9%4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}