CVE-2021-21295

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Summary

CVECVE-2021-21295
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-09 19:15:00 UTC
Updated2023-11-07 03:29:00 UTC
DescriptionNetty 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`.

Risk And Classification

Problem Types: CWE-444

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Kafka 2.7.0 All All All
Application Apache Kudu All All All All
Application Apache Zookeeper 3.5.8 - All All
Application Apache Zookeeper 3.5.9 All All All
Application Apache Zookeeper 3.6.1 All All All
Application Apache Zookeeper 3.6.2 All All All
Operating System Debian Debian Linux 10.0 All All All
Application Netapp Oncommand Api Services - All All All
Application Netapp Oncommand Workflow Automation - All All All
Application Netty Netty All All All All
Application Oracle Communications Cloud Native Core Policy 1.14.0 All All All
Application Quarkus Quarkus All All All All

References

ReferenceSourceLinkTags
Pony Mail! MLIST lists.apache.org
[kafka-jira] 20210402 [jira] [Assigned] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
Pony Mail! MLIST lists.apache.org
[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 lists.apache.org
[kudu-issues] 20210904 [jira] [Updated] (KUDU-3313) There is a CVE-2021-21409 vulnerability in netty version 4.1.60 lists.apache.org
[ranger-dev] 20210317 [jira] [Assigned] (RANGER-3209) Upgrade netty to 4.1.60+ due to CVE-2021-21290 and CVE-2021-21295 lists.apache.org
[zookeeper-issues] 20210928 [jira] [Updated] (ZOOKEEPER-4390) CVE-2021-28169 , CVE-2021-28163, - Upgrade jetty to 9.4.42 lists.apache.org
lists.apache.org/thread.html/rae198f44c3f7ac5264045e6ba976be1703cff38dcf160991... lists.apache.org
[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 lists.apache.org
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[pulsar-commits] 20210329 [GitHub] [pulsar] merlimat closed issue #10071: CVE-2021-21295 & CVE-2021-21290 lists.apache.org
[kudu-issues] 20210907 [jira] [Updated] (KUDU-3313) There is a CVE-2021-21409 vulnerability in netty version 4.1.60 lists.apache.org
[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) lists.apache.org
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[zookeeper-dev] 20210928 [jira] [Created] (ZOOKEEPER-4390) CVE-2021-28169 - Upgrade jetty to 9.4.42 lists.apache.org
[kafka-jira] 20210331 [GitHub] [kafka] dongjinleekr opened a new pull request #10448: KAFKA-12583: Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
Debian -- Security Information -- DSA-4885-1 netty DEBIAN www.debian.org
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[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 lists.apache.org
[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 lists.apache.org
lists.apache.org/thread.html/r6d32fc3cd547f7c9a288a57c7f525f5d00a00d5d163613e0... lists.apache.org
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[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 lists.apache.org
[zookeeper-issues] 20210928 [jira] [Updated] (ZOOKEEPER-4390) CVE-2021-28169 , - Upgrade jetty to 9.4.42 lists.apache.org
lists.apache.org/thread.html/rc73b8dd01b1be276d06bdf07883ecd93fe1a01f139a99ef3... lists.apache.org
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[hbase-issues] 20210402 [jira] [Updated] (HBASE-25728) [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
Pony Mail! MLIST lists.apache.org
[kafka-jira] 20210401 [jira] [Resolved] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
[zookeeper-issues] 20210928 [jira] [Updated] (ZOOKEEPER-4390) CVE-2021-28169 , CVE-2021-28163, CVE-2021-34428- Upgrade jetty to 9.4.42 lists.apache.org
[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 lists.apache.org
[hbase-issues] 20210402 [jira] [Updated] (HBASE-25728) [hbase-thirdparty] Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
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[zookeeper-commits] 20210331 [zookeeper] branch master updated: ZOOKEEPER-4272: Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
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[kafka-jira] 20210401 [jira] [Commented] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
Oracle Critical Patch Update Advisory - April 2022 MISC www.oracle.com
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[bookkeeper-issues] 20210330 [GitHub] [bookkeeper] eolivelli opened a new issue #2669: Update Netty to 4.1.60.final lists.apache.org
[flink-issues] 20210424 [jira] [Created] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx lists.apache.org
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[flink-issues] 20210618 [jira] [Updated] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx lists.apache.org
[zookeeper-issues] 20210928 [jira] [Updated] (ZOOKEEPER-4390) CVE-2021-28169 - Upgrade jetty to 9.4.42 lists.apache.org
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[flink-issues] 20210426 [jira] [Updated] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx lists.apache.org
[ranger-dev] 20210317 [jira] [Created] (RANGER-3209) Upgrade netty to 4.1.60+ due to CVE-2021-21290 and CVE-2021-21295 lists.apache.org
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March 2021 Apache Netty Vulnerabilities in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
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[kudu-issues] 20210907 [jira] [Resolved] (KUDU-3313) There is a CVE-2021-21409 vulnerability in netty version 4.1.60 lists.apache.org
Pony Mail! MLIST lists.apache.org
[flink-issues] 20210511 [jira] [Commented] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx lists.apache.org
lists.apache.org/thread.html/rf87b870a22aa5c77c27900967b518a71a7d954c2952860fc... lists.apache.org
lists.apache.org/thread.html/rdb4db3f5a9c478ca52a7b164680b88877a5a9c174e704767... lists.apache.org
Pony Mail! MLIST lists.apache.org
[kafka-dev] 20210401 [jira] [Resolved] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
Pony Mail! MISC lists.apache.org
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lists.apache.org/thread.html/r2e93ce23e04c3f0a61e987d1111d0695cb668ac4ec4edbf2... lists.apache.org
[zookeeper-issues] 20210401 [jira] [Commented] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
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Merge pull request from GHSA-wm47-8v5p-wjpj · netty/netty@89c241e · GitHub MISC github.com
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[jackrabbit-dev] 20210709 [GitHub] [jackrabbit-oak] blackat opened a new pull request #321: Update netty to resolve CVE-2021-21295 and BDSA-2018-4022 lists.apache.org
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lists.apache.org/thread.html/r8db1d7b3b9acc9e8d2776395e280eb9615dd7790e1da8c57... lists.apache.org
lists.apache.org/thread.html/racc191a1f70a4f13155e8002c61bddef2870b26441971c69... lists.apache.org
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[zookeeper-dev] 20210330 [jira] [Created] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
[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 lists.apache.org
[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 lists.apache.org
Pony Mail! MISC lists.apache.org
[zookeeper-issues] 20210331 [jira] [Resolved] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
Pony Mail! MLIST lists.apache.org
[kafka-jira] 20210330 [jira] [Updated] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
Pony Mail! MLIST lists.apache.org
[flink-dev] 20210424 [jira] [Created] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx lists.apache.org
Pony Mail! MLIST lists.apache.org
[kafka-jira] 20210331 [GitHub] [kafka] dongjinleekr commented on pull request #10448: KAFKA-12583: Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
lists.apache.org/thread.html/rb523bb6c60196c5f58514b86a8585c2069a4852039b45de3... lists.apache.org
[zookeeper-issues] 20210331 [jira] [Updated] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
[zookeeper-issues] 20210330 [jira] [Created] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
Pony Mail! MLIST lists.apache.org
Pony Mail! MISC lists.apache.org
[flink-issues] 20210610 [jira] [Updated] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx lists.apache.org
[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 lists.apache.org
Pony Mail! MISC lists.apache.org
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[kudu-issues] 20210904 [jira] [Created] (KUDU-3313) There is a CVE-2021-21409 vulnerability in netty version 4.1.60 lists.apache.org
Pony Mail! MISC lists.apache.org
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[pulsar-commits] 20210329 [GitHub] [pulsar] yaswanthnadella opened a new issue #10071: CVE-2021-21295 & CVE-2021-21290 lists.apache.org
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[zookeeper-issues] 20210330 [jira] [Updated] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
lists.apache.org/thread.html/re4f70b62843e92163fab03b65e2aa8078693293a0c36f1cc... lists.apache.org
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Possible request smuggling in HTTP/2 due missing validation · Advisory · netty/netty · GitHub CONFIRM github.com
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lists.apache.org/thread.html/r57245853c7245baab09eae08728c52b58fd7766653809238... lists.apache.org
[zookeeper-issues] 20210331 [jira] [Assigned] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
[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 lists.apache.org
core: add checks to chunked encoding for http/2 by carl-mastrangelo · Pull Request #980 · Netflix/zuul · GitHub MISC github.com
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[zookeeper-issues] 20210331 [jira] [Commented] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
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lists.apache.org/thread.html/r8bcaf7821247b1836b10f6a1a3a3212b06272fd4cde4a859... lists.apache.org
[zookeeper-issues] 20210402 [jira] [Commented] (ZOOKEEPER-4272) Upgrade Netty library to > 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
[kudu-issues] 20210907 [jira] [Commented] (KUDU-3313) There is a CVE-2021-21409 vulnerability in netty version 4.1.60 lists.apache.org
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[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 lists.apache.org
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[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 lists.apache.org
[flink-issues] 20210426 [jira] [Commented] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx lists.apache.org
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[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 lists.apache.org
[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 lists.apache.org
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[kafka-dev] 20210330 [jira] [Created] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
[zookeeper-issues] 20210928 [jira] [Created] (ZOOKEEPER-4390) CVE-2021-28169 - Upgrade jetty to 9.4.42 lists.apache.org
[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 lists.apache.org
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[hbase-issues] 20210402 [jira] [Assigned] (HBASE-25728) [hbase-thirdparty] Upgrade Netty library to >= 4.1.60 due to security vulnerability CVE-2021-21295 lists.apache.org
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[kafka-jira] 20210330 [jira] [Created] (KAFKA-12583) Upgrade of netty-codec due to CVE-2021-21295 lists.apache.org
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[pulsar-commits] 20211020 [GitHub] [pulsar] Shoothzj opened a new pull request #12437: [Security] Bump grpc to 1.41.0 lists.apache.org
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[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 lists.apache.org
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[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 lists.apache.org
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[pulsar-commits] 20210329 [GitHub] [pulsar] aahmed-se opened a new pull request #10073: Upgrade Netty version to 4.1.60.final lists.apache.org
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Legacy QID Mappings

  • 178527 Debian Security Update for netty (DSA 4885-1)
  • 180463 Debian Security Update for netty (CVE-2021-21295)
  • 199574 Ubuntu Security Notification for Netty Vulnerabilities (USN-6049-1)
  • 239353 Red Hat Update for Red Hat JBoss Enterprise Application Platform 7.3.7 (RHSA-2021:2048)
  • 239354 Red Hat Update for Red Hat JBoss Enterprise Application Platform 7.3.7 (RHSA-2021:2047)
  • 239355 Red Hat Update for Red Hat JBoss Enterprise Application Platform 7.3.7 (RHSA-2021:2046)
  • 239652 Red Hat Update for Red Hat JBoss Enterprise Application Platform 7.4.1 (RHSA-2021:3658)
  • 239653 Red Hat Update for Red Hat JBoss Enterprise Application Platform 7.4.1 (RHSA-2021:3656)
  • 239741 Red Hat Update for amq clients 2.9.1 release and (RHSA-2021:1511)
  • 240566 Red Hat Update for Satellite 6.11 Release (RHSA-2022:5498)
  • 750302 OpenSUSE Security Update for netty (openSUSE-SU-2021:0448-1)
  • 960505 Rocky Linux Security Update for Satellite (RLSA-2022:5498)
  • 980339 Java (maven) Security Update for io.netty:netty-codec-http2 (GHSA-wm47-8v5p-wjpj)
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