CVE-2020-11612 Information
Description
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.
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Reference
https://github.com/netty/netty/compare/netty-4.1.45.Final…netty-4.1.46.Final https://github.com/netty/netty/issues/6168 https://github.com/netty/netty/pull/9924 https://lists.apache.org/thread.html/r14446ed58208cb6d97b6faa6ebf145f1cf2c70c0886c0c133f4d3b6f@3Ccommits.druid.apache.org3E https://lists.apache.org/thread.html/r255ed239e65d0596812362adc474bee96caf7ba042c7ad2f3c62cec7@3Cissues.zookeeper.apache.org3E https://lists.apache.org/thread.html/r281882fdf9ea89aac02fd2f92786693a956aac2ce9840cce87c7df6b@3Ccommits.zookeeper.apache.org3E https://lists.apache.org/thread.html/r2958e4d49ee046e1e561e44fdc114a0d2285927501880f15852a9b53@3Ccommits.druid.apache.org3E https://lists.apache.org/thread.html/r31424427cc6d7db46beac481bdeed9a823fc20bb1b9deede38557f71@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/r3195127e46c87a680b5d1d3733470f83b886bfd3b890c50df718bed1@3Ccommits.druid.apache.org3E https://lists.apache.org/thread.html/r3ea4918d20d0c1fa26cac74cc7cda001d8990bc43473d062867ef70d@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/r4a7e4e23bd84ac24abf30ab5d5edf989c02b555e1eca6a2f28636692@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/r4f4a14d6a608db447b725ec2e96c26ac9664d83cd879aa21e2cfeb24@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/r5030cd8ea5df1e64cf6a7b633eff145992fbca03e8bfc687cd2427ab@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/r5a0b1f0b1c3bcd66f5177fbd6f6de2d0f8cae24a13ab2669f274251a@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/r5b1ad61552591b747cd31b3a908d5ff2e8f2a8a6847583dd6b7b1ee7@3Cissues.zookeeper.apache.org3E https://lists.apache.org/thread.html/r69b23a94d4ae45394cabae012dd1f4a963996869c44c478eb1c61082@3Ccommits.zookeeper.apache.org3E https://lists.apache.org/thread.html/r7641ee788e1eb1be4bb206a7d15f8a64ec6ef23e5ec6132d5a567695@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/r7836bbdbe95c99d4d725199f0c169927d4e87ba57e4beeeb699c097a@3Ccommits.druid.apache.org3E https://lists.apache.org/thread.html/r866288c2ada00ce148b7307cdf869f15f24302b3eb2128af33830997@3Ccommits.zookeeper.apache.org3E https://lists.apache.org/thread.html/r88e2b91560c065ed67e62adf8f401c417e4d70256d11ea447215a70c@3Cissues.zookeeper.apache.org3E https://lists.apache.org/thread.html/r8a654f11e1172b0effbfd6f8d5b6ca651ae4ac724a976923c268a42f@3Ccommits.druid.apache.org3E https://lists.apache.org/thread.html/r9addb580456807cd11d6f0c6b6373b7d7161d06d2278866c30c7febb@3Ccommits.zookeeper.apache.org3E https://lists.apache.org/thread.html/r9c30b7fca4baedebcb46d6e0f90071b30cc4a0e074164d50122ec5ec@3Ccommits.zookeeper.apache.org3E https://lists.apache.org/thread.html/ra98e3a8541a09271f96478d5e22c7e3bd1afdf48641c8be25d62d9f9@3Ccommits.druid.apache.org3E https://lists.apache.org/thread.html/raaac04b7567c554786132144bea3dcb72568edd410c1e6f0101742e7@3Cissues.flink.apache.org3E https://lists.apache.org/thread.html/rd302ddb501fa02c5119120e5fc21df9a1c00e221c490edbe2d7ad365@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/re1ea144e91f03175d661b2d3e97c7d74b912e019613fa90419cf63f4@3Cissues.zookeeper.apache.org3E https://lists.apache.org/thread.html/ref2c8a0cbb3b8271e5b9a06457ba78ad2028128627186531730f50ef@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/ref3943adbc3a8813aee0e3a9dd919bacbb27f626be030a3c6d6c7f83@3Ccommits.pulsar.apache.org3E https://lists.apache.org/thread.html/rf5b2dfb7401666a19915f8eaef3ba9f5c3386e2066fcd2ae66e16a2f@3Cdev.flink.apache.org3E https://lists.apache.org/thread.html/rf803b65b4a57589d79cf2e83d8ece0539018d32864f932f63c972844@3Cnotifications.zookeeper.apache.org3E https://lists.apache.org/thread.html/rf9f8bcc4ca8d2788f77455ff594468404732a4497baebe319043f4d5@3Ccommits.zookeeper.apache.org3E https://lists.apache.org/thread.html/rfd173eac20d5e5f581c8984b685c836dafea8eb2f7ff85f617704cf1@3Cdev.zookeeper.apache.org3E https://lists.apache.org/thread.html/rff8859c0d06b1688344b39097f9685c43b461cf2bc41f60f001704e9@3Ccommits.zookeeper.apache.org3E https://lists.debian.org/debian-lts-announce/2020/09/msg00003.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46/
Attack Complexity
LOW
Privileges Required
NONE
User Interaction Required
NONE
Scope
NONE
Confidentiality Impact
UNCHANGED
Integrity Impact
HIGH
Availability Impact
HIGH
Base Score
HIGH
Base Severity
9.8
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