CVE-2021-43825

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Source
https://cve.org/CVERecord?id=CVE-2021-43825
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-43825.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-43825
Aliases
Downstream
Related
  • GHSA-h69p-g6xg-mhhh
Published
2022-02-22T23:15:10.890Z
Modified
2026-03-13T05:18:16.667528Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Envoy is an open source edge and service proxy, designed for cloud-native applications. Sending a locally generated response must stop further processing of request or response data. Envoy tracks the amount of buffered request and response data and aborts the request if the amount of buffered data is over the limit by sending 413 or 500 responses. However when the buffer overflows while response is processed by the filter chain the operation may not be aborted correctly and result in accessing a freed memory block. If this happens Envoy will crash resulting in a denial of service.

References

Affected packages

Git / github.com/envoyproxy/envoy

Affected ranges

Type
GIT
Repo
https://github.com/envoyproxy/envoy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a79ca225f1ed924b855dff8a26bd7f7cdb84e694
Introduced
68fe53a889416fd8570506232052b06f5a531541
Fixed
a17cdcdfad24de101e95716b77549ba689824f25
Introduced
96701cb24611b0f3aac1cc0dd8bf8589fbdf8e9e
Fixed
4aaf9593152c6996b9da384c8918e9ad4f0abd4d
Introduced
a9d72603c68da3a10a1c0d021d01c7877e6f2a30
Fixed
af50070ee60866874b0a9383daf9364e884ded22
Fixed
148de954ed3585d8b4298b424aa24916d0de6136
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.18.6"
        },
        {
            "introduced": "1.19.0"
        },
        {
            "fixed": "1.19.3"
        },
        {
            "introduced": "1.20.0"
        },
        {
            "fixed": "1.20.2"
        },
        {
            "introduced": "1.21.0"
        },
        {
            "fixed": "1.21.1"
        }
    ]
}

Affected versions

v1.*
v1.19.0
v1.19.1
v1.20.0
v1.20.1
v1.21.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-43825.json"
vanir_signatures 
[
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.h"
        },
        "id": "CVE-2021-43825-097fed22",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "245673340480709380475607110780385137708",
                "285494569074532567258474565032572094364",
                "121492910522987967398570563042373873103",
                "208903825150298770882316003860954195851"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/af50070ee60866874b0a9383daf9364e884ded22"
    },
    {
        "target": {
            "file": "source/common/http/conn_manager_impl.cc",
            "function": "ConnectionManagerImpl::doEndStream"
        },
        "id": "CVE-2021-43825-0a813293",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 1609.0,
            "function_hash": "311275383152118931784984301961199794352"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.cc",
            "function": "Filter::onUpstreamEvent"
        },
        "id": "CVE-2021-43825-0e4fc27e",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 711.0,
            "function_hash": "63191530169222520921233896458439701262"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/a79ca225f1ed924b855dff8a26bd7f7cdb84e694"
    },
    {
        "target": {
            "file": "source/common/http/conn_manager_impl.cc",
            "function": "ConnectionManagerImpl::ActiveStream::encodeHeaders"
        },
        "id": "CVE-2021-43825-21f7e5ce",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 3749.0,
            "function_hash": "168923569037349337459400675916926209481"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "source/common/http/filter_manager.cc",
            "function": "FilterManager::maybeEndDecode"
        },
        "id": "CVE-2021-43825-240400cf",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 311.0,
            "function_hash": "315532894027945407581370801278592550835"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.cc"
        },
        "id": "CVE-2021-43825-25d456d2",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "146243477446113422387021212725253250778",
                "38867459780981627133568037950540228786",
                "247042036583305394760031334831783811398",
                "325013980647195303750429821852338176203",
                "190222441294940987692714025372522320194",
                "233481120278761949454860284316900076892",
                "33182693539138785849824461743826464632",
                "238411867963402661331142337279192022640"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/a17cdcdfad24de101e95716b77549ba689824f25"
    },
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.cc",
            "function": "Filter::onDownstreamEvent"
        },
        "id": "CVE-2021-43825-3fe0ae84",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 648.0,
            "function_hash": "243442652017391788382200176589855195754"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/a79ca225f1ed924b855dff8a26bd7f7cdb84e694"
    },
    {
        "target": {
            "file": "test/integration/tcp_tunneling_integration_test.cc"
        },
        "id": "CVE-2021-43825-49af67d3",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "48555961344162091530114484247512887348",
                "262502622330308196055685632396206527810",
                "44051101608002913249948422506083140770"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/a79ca225f1ed924b855dff8a26bd7f7cdb84e694"
    },
    {
        "target": {
            "file": "test/integration/tcp_tunneling_integration_test.cc"
        },
        "id": "CVE-2021-43825-4f2f527a",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "48555961344162091530114484247512887348",
                "262502622330308196055685632396206527810",
                "44051101608002913249948422506083140770"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/a17cdcdfad24de101e95716b77549ba689824f25"
    },
    {
        "target": {
            "file": "source/common/http/filter_manager.h",
            "function": "remoteComplete"
        },
        "id": "CVE-2021-43825-6aef66dd",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 63.0,
            "function_hash": "97833949759316060733099611660179319905"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "source/common/http/filter_manager.h"
        },
        "id": "CVE-2021-43825-72f1da2c",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "186397651917258797772294565996541473347",
                "68918047758628887814851969596077849009",
                "259878721034296135000489742308475202567",
                "83428145836199727226224128539505869894",
                "282485623446623018687962592705810582220",
                "45407368377792007335309114367446598361",
                "183322861732672934581824186547731237780",
                "231878033675116725973461507198017152843",
                "205589801302643637649102184334139709236",
                "225432527720844868163757606818968780585",
                "321005722655747623362238623034832090730",
                "336549933460513408083555293590786914395",
                "67618496987210944356518979886139582458",
                "154508291562220529247438777288137816702",
                "232341066113239013082104778507613652942",
                "340088901971753172180621979083024012940",
                "60372707688995110817879007932124230425",
                "114153931525715146597711593185932890215"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "source/common/http/filter_manager.cc",
            "function": "ActiveStreamEncoderFilter::responseDataTooLarge"
        },
        "id": "CVE-2021-43825-7315cf62",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 445.0,
            "function_hash": "230926030186833463017415307976734094308"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "source/common/conn_pool/conn_pool_base.cc",
            "function": "ConnPoolImplBase::checkForIdleAndCloseIdleConnsIfDraining"
        },
        "id": "CVE-2021-43825-750e7fbb",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 338.0,
            "function_hash": "43013079311173114698727080572662162328"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/4aaf9593152c6996b9da384c8918e9ad4f0abd4d"
    },
    {
        "target": {
            "file": "source/common/conn_pool/conn_pool_base.h"
        },
        "id": "CVE-2021-43825-75516c6f",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "238363169343804913942300291017684487943",
                "281075802092293195505541183629950851527",
                "190309091056183134939303314630437286332",
                "1336839216182560585869212455485126136",
                "91854374677920975889051724337189261314",
                "176073550574850004587196271703191506168",
                "54303611712421497849276770032572170236",
                "89596254872871249889385232134194772639",
                "232868586170569298338666905475474416875",
                "68418232771506422252069681807775341343"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/4aaf9593152c6996b9da384c8918e9ad4f0abd4d"
    },
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.cc",
            "function": "Filter::onUpstreamEvent"
        },
        "id": "CVE-2021-43825-8a3c3605",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 711.0,
            "function_hash": "63191530169222520921233896458439701262"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/a17cdcdfad24de101e95716b77549ba689824f25"
    },
    {
        "target": {
            "file": "source/common/http/filter_manager.cc",
            "function": "FilterManager::maybeEndEncode"
        },
        "id": "CVE-2021-43825-9976ca24",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 118.0,
            "function_hash": "277442276636326879712231514311045857557"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "test/integration/tcp_tunneling_integration_test.cc"
        },
        "id": "CVE-2021-43825-9c39651a",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "222375982320279527150068471158201686244",
                "165738277750233846199418982723160704713",
                "44051101608002913249948422506083140770"
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        "source": "https://github.com/envoyproxy/envoy/commit/af50070ee60866874b0a9383daf9364e884ded22"
    },
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.cc",
            "function": "Filter::onDownstreamEvent"
        },
        "id": "CVE-2021-43825-a6789e61",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 808.0,
            "function_hash": "296559161755360112084384558440136934044"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/af50070ee60866874b0a9383daf9364e884ded22"
    },
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.cc",
            "function": "Filter::onDownstreamEvent"
        },
        "id": "CVE-2021-43825-abeb66c1",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
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            "function_hash": "243442652017391788382200176589855195754"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/a17cdcdfad24de101e95716b77549ba689824f25"
    },
    {
        "target": {
            "file": "test/integration/cds_integration_test.cc"
        },
        "id": "CVE-2021-43825-bf50e605",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
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                "202222073443799289957911450767890213833",
                "115564202354952612799820744008677299818",
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                "266358857140130331037141171435995735386",
                "241277250285489246241581928533925069698",
                "112864798336767260895615422020255373801",
                "326344252156913283305823248376635974319",
                "149501076714298581724217944116072240117",
                "20851967513280832025446682514306651511",
                "101660301215173511645125806388931558046",
                "161983258376373368998625288716073445864",
                "125013157627477663648794220335175813129",
                "114297756736507093046297363714182913184",
                "326342629182717535494243166437244508087",
                "129503348076797258550455082149053172774",
                "6063454819406071701935832397149074681",
                "25450544109902264946434894665349483615",
                "14209541420216802153449926603071335280",
                "28083104488430351869423149520385632380",
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            "threshold": 0.9
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        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/4aaf9593152c6996b9da384c8918e9ad4f0abd4d"
    },
    {
        "target": {
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        },
        "id": "CVE-2021-43825-c143ebbc",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
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                "285494569074532567258474565032572094364",
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    },
    {
        "target": {
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        },
        "id": "CVE-2021-43825-c4824ee2",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "146243477446113422387021212725253250778",
                "38867459780981627133568037950540228786",
                "247042036583305394760031334831783811398",
                "325013980647195303750429821852338176203",
                "190222441294940987692714025372522320194",
                "233481120278761949454860284316900076892",
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    },
    {
        "target": {
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            "function": "ActiveStreamDecoderFilter::complete"
        },
        "id": "CVE-2021-43825-c4d1f879",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 96.0,
            "function_hash": "13534296838354325889420825675334511499"
        },
        "signature_type": "Function",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "source/common/http/filter_manager.cc"
        },
        "id": "CVE-2021-43825-cd856881",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
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                "59895298657500378892616105464409500433",
                "75935686465706959266350947605764800405",
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                "127449658830366102757106907055997446859",
                "251554249462285985244750146169139405978",
                "205811339510662186701572902052099322589",
                "260248050905771498759625208127641365248",
                "43383801121743948766663513773847628782",
                "265895937746636387586590196395269813037",
                "206010788776418643085791317329015215377",
                "297794760359623182336828162069968870602",
                "189976868399299878028811205707788077295",
                "234540401188890199679625417622121693592",
                "196202206260082188095901167322821272349",
                "328865296436160718661898996353899801848",
                "131523479208015020834895338877639996611",
                "154594511319165909961864226687292787916",
                "268758606425552824554413156467941984578",
                "95290844002098362325235949103193378929"
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        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/148de954ed3585d8b4298b424aa24916d0de6136"
    },
    {
        "target": {
            "file": "test/config/utility.h"
        },
        "id": "CVE-2021-43825-ce5c4e8e",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "150676539833679190158940891882333303963",
                "27409818851555323095073296906901027733",
                "55324179392422643085196396072729602785"
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        "signature_type": "Line",
        "source": "https://github.com/envoyproxy/envoy/commit/4aaf9593152c6996b9da384c8918e9ad4f0abd4d"
    },
    {
        "target": {
            "file": "source/common/tcp_proxy/tcp_proxy.h"
        },
        "id": "CVE-2021-43825-cf3745ce",
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "26722413740939448104101388019871754100",
                "285494569074532567258474565032572094364",
                "189982742750395040949615227195286815818",
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