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CVE-2021-21295 Details

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Name	CVE-2021-21295
Status	Candidate
Description	Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by `Http2MultiplexHandler` as it is propagated up. This is fine as long as the request is not proxied through as HTTP/1.1. If the request comes in as an HTTP/2 stream, gets converted into the HTTP/1.1 domain objects (`HttpRequest`, `HttpContent`, etc.) via `Http2StreamFrameToHttpObjectCodec `and then sent up to the child channel's pipeline and proxied through a remote peer as HTTP/1.1 this may result in request smuggling. In a proxy case, users may assume the content-length is validated somehow, which is not the case. If the request is forwarded to a backend channel that is a HTTP/1.1 connection, the Content-Length now has meaning and needs to be checked. An attacker can smuggle requests inside the body as it gets downgraded from HTTP/2 to HTTP/1.1. For an example attack refer to the linked GitHub Advisory. Users are only affected if all of this is true: `HTTP2MultiplexCodec` or `Http2FrameCodec` is used, `Http2StreamFrameToHttpObjectCodec` is used to convert to HTTP/1.1 objects, and these HTTP/1.1 objects are forwarded to another remote peer. This has been patched in 4.1.60.Final As a workaround, the user can do the validation by themselves by implementing a custom `ChannelInboundHandler` that is put in the `ChannelPipeline` behind `Http2StreamFrameToHttpObjectCodec`.
References	CONFIRM: https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj URL: https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj DEBIAN:DSA-4885 URL: https://www.debian.org/security/2021/dsa-4885 MISC: https://lists.apache.org/thread.html/r2e93ce23e04c3f0a61e987d1111d0695cb668ac4ec4edbf237bd3e80@%3Ccommits.servicecomb.apache.org%3E MISC: https://lists.apache.org/thread.html/r490ca5611c150d193b320a2608209180713b7c68e501b67b0cffb925@%3Ccommits.servicecomb.apache.org%3E MISC: https://lists.apache.org/thread.html/r57245853c7245baab09eae08728c52b58fd77666538092389cc3e882@%3Ccommits.servicecomb.apache.org%3E MISC: https://lists.apache.org/thread.html/r6d32fc3cd547f7c9a288a57c7f525f5d00a00d5d163613e0d10a23ef@%3Ccommits.servicecomb.apache.org%3E MISC: https://lists.apache.org/thread.html/r8db1d7b3b9acc9e8d2776395e280eb9615dd7790e1da8c57039963de@%3Cnotifications.zookeeper.apache.org%3E MISC: https://lists.apache.org/thread.html/rb523bb6c60196c5f58514b86a8585c2069a4852039b45de3818b29d2@%3Ccommits.servicecomb.apache.org%3E MISC: https://lists.apache.org/thread.html/rc73b8dd01b1be276d06bdf07883ecd93fe1a01f139a99ef30ba4308c@%3Ccommits.servicecomb.apache.org%3E MISC: https://lists.apache.org/thread.html/rd25c88aad0e76240dd09f0eb34bdab924933946429e068a167adcb73@%3Ccommits.servicecomb.apache.org%3E MISC: https://lists.apache.org/thread.html/rdb4db3f5a9c478ca52a7b164680b88877a5a9c174e7047676c006b2c@%3Ccommits.servicecomb.apache.org%3E MISC: https://github.com/Netflix/zuul/pull/980 URL: https://github.com/Netflix/zuul/pull/980 MISC: https://github.com/netty/netty/commit/89c241e3b1795ff257af4ad6eadc616cb2fb3dc4 URL: https://github.com/netty/netty/commit/89c241e3b1795ff257af4ad6eadc616cb2fb3dc4 MLIST:[bookkeeper-issues] 20210330 [GitHub] [bookkeeper] eolivelli opened a new issue #2669: Update Netty to 4.1.60.final URL: https://lists.apache.org/thread.html/r790c2926efcd062067eb18fde2486527596d7275381cfaff2f7b3890@%3Cissues.bookkeeper.apache.org%3E MLIST:[hbase-commits] 20210402 [hbase-thirdparty] branch master updated: HBASE-25728 [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 (#48) URL: https://lists.apache.org/thread.html/rcf3752209a8b04996373bf57fdc808b3bfaa2be8702698a0323641f8@%3Ccommits.hbase.apache.org%3E MLIST:[hbase-dev] 20210402 [jira] [Created] (HBASE-25728) [hbase-thirdparty] ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r905b92099998291956eebf4f1c5d95f5a0cbcece2946cc46d32274fd@%3Cdev.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [GitHub] [hbase-thirdparty] Apache-HBase commented on pull request #48: HBASE-25728 [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r6aee7e3566cb3e51eeed2fd8786704d91f80a7581e00a787ba9f37f6@%3Cissues.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [GitHub] [hbase-thirdparty] HorizonNet commented on pull request #48: HBASE-25728 [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/rb95d42ce220ed4a4683aa17833b5006d657bc4254bc5cb03cd5e6bfb@%3Cissues.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [GitHub] [hbase-thirdparty] apurtell commented on pull request #48: HBASE-25728 [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r86cd38a825ab2344f3e6cad570528852f29a4ffdf56ab67d75c36edf@%3Cissues.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [GitHub] [hbase-thirdparty] apurtell merged pull request #48: HBASE-25728 [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r22b2f34447d71c9a0ad9079b7860323d5584fb9b40eb42668c21eaf1@%3Cissues.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [GitHub] [hbase-thirdparty] apurtell opened a new pull request #48: HBASE-25728 [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r040a5e4d9cca2f98354b58a70b27099672276f66995c4e2e39545d0b@%3Cissues.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [jira] [Assigned] (HBASE-25728) [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r393a339ab0b63ef9e6502253eeab26e7643b3e69738d5948b2b1d064@%3Cissues.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [jira] [Created] (HBASE-25728) [hbase-thirdparty] ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r268850f26639ebe249356ed6d8edb54ee8943be6f200f770784fb190@%3Cissues.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [jira] [Updated] (HBASE-25728) [hbase-thirdparty] Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r27b7e5a588ec826b15f38c40be500c50073400019ce7b8adfd07fece@%3Cissues.hbase.apache.org%3E MLIST:[hbase-issues] 20210402 [jira] [Updated] (HBASE-25728) [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/ra83096bcbfe6e1f4d54449f8a013117a0536404e9d307ab4a0d34f81@%3Cissues.hbase.apache.org%3E MLIST:[kafka-dev] 20210330 [jira] [Created] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/rb06c1e766aa45ee422e8261a8249b561784186483e8f742ea627bda4@%3Cdev.kafka.apache.org%3E MLIST:[kafka-dev] 20210401 [jira] [Resolved] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/r5fc5786cdd640b1b0a3c643237ce0011f0a08a296b11c0e2c669022c@%3Cdev.kafka.apache.org%3E MLIST:[kafka-jira] 20210330 [jira] [Created] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/r59bac5c09f7a4179b9e2460e8f41c278aaf3b9a21cc23678eb893e41@%3Cjira.kafka.apache.org%3E MLIST:[kafka-jira] 20210330 [jira] [Updated] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/r5e66e286afb5506cdfe9bbf68a323e8d09614f6d1ddc806ed0224700@%3Cjira.kafka.apache.org%3E MLIST:[kafka-jira] 20210331 [GitHub] [kafka] dongjinleekr commented on pull request #10448: KAFKA-12583: Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/r3c293431c781696681abbfe1c573c2d9dcdae6fd3ff330ea22f0433f@%3Cjira.kafka.apache.org%3E MLIST:[kafka-jira] 20210331 [GitHub] [kafka] dongjinleekr opened a new pull request #10448: KAFKA-12583: Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/r9051e4f484a970b5566dc1870ecd9c1eb435214e2652cf3ea4d0c0cc@%3Cjira.kafka.apache.org%3E MLIST:[kafka-jira] 20210401 [jira] [Commented] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/r96ce18044880c33634c4b3fcecc57b8b90673c9364d63eba00385523@%3Cjira.kafka.apache.org%3E MLIST:[kafka-jira] 20210401 [jira] [Resolved] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/rc165e36ca7cb5417aec3f21bbc4ec00fb38ecebdd96a82cfab9bd56f@%3Cjira.kafka.apache.org%3E MLIST:[kafka-jira] 20210402 [jira] [Assigned] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 URL: https://lists.apache.org/thread.html/r15f66ada9a5faf4bac69d9e7c4521cedfefa62df9509881603791969@%3Cjira.kafka.apache.org%3E MLIST:[pulsar-commits] 20210329 [GitHub] [pulsar] aahmed-se opened a new pull request #10073: Upgrade Netty version to 4.1.60.final URL: https://lists.apache.org/thread.html/r9924ef9357537722b28d04c98a189750b80694a19754e5057c34ca48@%3Ccommits.pulsar.apache.org%3E MLIST:[pulsar-commits] 20210329 [GitHub] [pulsar] merlimat closed issue #10071: CVE-2021-21295 & CVE-2021-21290 URL: https://lists.apache.org/thread.html/rb51d6202ff1a773f96eaa694b7da4ad3f44922c40b3d4e1a19c2f325@%3Ccommits.pulsar.apache.org%3E MLIST:[pulsar-commits] 20210329 [GitHub] [pulsar] yaswanthnadella opened a new issue #10071: CVE-2021-21295 & CVE-2021-21290 URL: https://lists.apache.org/thread.html/rcd163e421273e8dca1c71ea298dce3dd11b41d51c3a812e0394e6a5d@%3Ccommits.pulsar.apache.org%3E MLIST:[ranger-dev] 20210317 [jira] [Assigned] (RANGER-3209) Upgrade netty to 4.1.60+ due to CVE-2021-21290 and CVE-2021-21295 URL: https://lists.apache.org/thread.html/r7bb3cdc192e9a6f863d3ea05422f09fa1ae2b88d4663e63696ee7ef5@%3Cdev.ranger.apache.org%3E MLIST:[ranger-dev] 20210317 [jira] [Created] (RANGER-3209) Upgrade netty to 4.1.60+ due to CVE-2021-21290 and CVE-2021-21295 URL: https://lists.apache.org/thread.html/r02e467123d45006a1dda20a38349e9c74c3a4b53e2e07be0939ecb3f@%3Cdev.ranger.apache.org%3E MLIST:[zookeeper-commits] 20210331 [zookeeper] branch branch-3.5 updated: ZOOKEEPER-4272 ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r70cebada51bc6d49138272437d8a28fe971d0197334ef906b575044c@%3Ccommits.zookeeper.apache.org%3E MLIST:[zookeeper-commits] 20210331 [zookeeper] branch branch-3.6 updated: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r22adb45fe902aeafcd0a1c4db13984224a667676c323c66db3af38a1@%3Ccommits.zookeeper.apache.org%3E MLIST:[zookeeper-commits] 20210331 [zookeeper] branch branch-3.7 updated: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r6a122c25e352eb134d01e7f4fc4d345a491c5ee9453fef6fc754d15b@%3Ccommits.zookeeper.apache.org%3E MLIST:[zookeeper-commits] 20210331 [zookeeper] branch master updated: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r837bbcbf12e335e83ab448b1bd2c1ad7e86efdc14034b23811422e6a@%3Ccommits.zookeeper.apache.org%3E MLIST:[zookeeper-dev] 20210330 [jira] [Created] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r1908a34b9cc7120e5c19968a116ddbcffea5e9deb76c2be4fa461904@%3Cdev.zookeeper.apache.org%3E MLIST:[zookeeper-issues] 20210330 [jira] [Created] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/rb592033a2462548d061a83ac9449c5ff66098751748fcd1e2d008233@%3Cissues.zookeeper.apache.org%3E MLIST:[zookeeper-issues] 20210330 [jira] [Updated] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/rc0087125cb15b4b78e44000f841cd37fefedfda942fd7ddf3ad1b528@%3Cissues.zookeeper.apache.org%3E MLIST:[zookeeper-issues] 20210331 [jira] [Assigned] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r1bca0b81193b74a451fc6d687ab58ef3a1f5ec40f6c61561d8dd9509@%3Cissues.zookeeper.apache.org%3E MLIST:[zookeeper-issues] 20210331 [jira] [Commented] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r3ff9e735ca33612d900607dc139ebd38a64cadc6bce292e53eb86d7f@%3Cissues.zookeeper.apache.org%3E MLIST:[zookeeper-issues] 20210331 [jira] [Resolved] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/re6207ebe2ca4d44f2a6deee695ad6f27fd29d78980f1d46ed1574f91@%3Cissues.zookeeper.apache.org%3E MLIST:[zookeeper-issues] 20210331 [jira] [Updated] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/rcfc535afd413d9934d6ee509dce234dac41fa3747a7555befb17447e@%3Cissues.zookeeper.apache.org%3E MLIST:[zookeeper-issues] 20210401 [jira] [Commented] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/rdc096e13ac4501ea2e2b03a197682a313b85d3d3ec89d5ae5551b384@%3Cissues.zookeeper.apache.org%3E MLIST:[zookeeper-issues] 20210402 [jira] [Commented] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r2936730ef0a06e724b96539bc7eacfcd3628987c16b1b99c790e7b87@%3Cissues.zookeeper.apache.org%3E MLIST:[zookeeper-notifications] 20210331 [GitHub] [zookeeper] arshadmohammad closed pull request #1670: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/rbed09768f496244a2e138dbbe6d2847ddf796c9c8ef9e50f2e3e30d9@%3Cnotifications.zookeeper.apache.org%3E MLIST:[zookeeper-notifications] 20210331 [GitHub] [zookeeper] arshadmohammad commented on pull request #1669: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/rbadcbcb50195f00bbd196403865ced521ca70787999583c07be38d0e@%3Cnotifications.zookeeper.apache.org%3E MLIST:[zookeeper-notifications] 20210331 [GitHub] [zookeeper] arshadmohammad commented on pull request #1670: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r5470456cf1409a99893ae9dd57439799f6dc1a60fda90e11570f66fe@%3Cnotifications.zookeeper.apache.org%3E MLIST:[zookeeper-notifications] 20210331 [GitHub] [zookeeper] asfgit closed pull request #1669: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r5232e33a1f3b310a3e083423f736f3925ebdb150844d60ac582809f8@%3Cnotifications.zookeeper.apache.org%3E MLIST:[zookeeper-notifications] 20210331 [GitHub] [zookeeper] ayushmantri opened a new pull request #1669: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r312ce5bd3c6bf08c138349b507b6f1c25fe9cf40b6f2b0014c9d12b1@%3Cnotifications.zookeeper.apache.org%3E MLIST:[zookeeper-notifications] 20210331 [GitHub] [zookeeper] ayushmantri opened a new pull request #1670: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r6a29316d758db628a1df49ca219d64caf493999b52cc77847bfba675@%3Cnotifications.zookeeper.apache.org%3E MLIST:[zookeeper-notifications] 20210331 [GitHub] [zookeeper] eolivelli commented on pull request #1669: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 URL: https://lists.apache.org/thread.html/r67e6a636cbc1958383a1cd72b7fd0cd7493360b1dd0e6c12f5761798@%3Cnotifications.zookeeper.apache.org%3E
Phase	Assigned (20201222)
Votes	None (candidate not yet proposed)
Comments

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