CVE-2021-40830

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Source
https://cve.org/CVERecord?id=CVE-2021-40830
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-40830.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-40830
Aliases
Published
2021-11-23T00:15:07.380Z
Modified
2026-04-12T02:00:18.886583Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

The AWS IoT Device SDK v2 for Java, Python, C++ and Node.js appends a user supplied Certificate Authority (CA) to the root CAs instead of overriding it on Unix systems. TLS handshakes will thus succeed if the peer can be verified either from the user-supplied CA or the system’s default trust-store. Attackers with access to a host’s trust stores or are able to compromise a certificate authority already in the host's trust store (note: the attacker must also be able to spoof DNS in this case) may be able to use this issue to bypass CA pinning. An attacker could then spoof the MQTT broker, and either drop traffic and/or respond with the attacker's data, but they would not be able to forward this data on to the MQTT broker because the attacker would still need the user's private keys to authenticate against the MQTT broker. The 'awstlsctxoptionsoverridedefaulttruststore*' function within the aws-c-io submodule has been updated to override the default trust store. This corrects this issue. This issue affects: Amazon Web Services AWS IoT Device SDK v2 for Java versions prior to 1.5.0 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for Python versions prior to 1.6.1 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for C++ versions prior to 1.12.7 on Linux/Unix. Amazon Web Services AWS IoT Device SDK v2 for Node.js versions prior to 1.5.3 on Linux/Unix. Amazon Web Services AWS-C-IO 0.10.4 on Linux/Unix.

References

Affected packages

Git
github.com/aws/aws-iot-device-sdk-cpp-v2

Affected ranges

Type
GIT
Repo
https://github.com/aws/aws-iot-device-sdk-cpp-v2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
efa3dc2d4a98f9be3470c5b1d6f20ea509599217
Fixed
efd6f1b340a7f56f7558a0490a6c78fa2dd253ba
Fixed
b425c9595a0ca88f6ba909e81f9ea0553cd2295c
Database specific 
{
    "cpe": [
        "cpe:2.3:a:amazon:amazon_web_services_internet_of_things_device_software_development_kit_v2:*:*:*:*:*:node.js:*:*",
        "cpe:2.3:a:amazon:amazon_web_services_internet_of_things_device_software_development_kit_v2:*:*:*:*:*:python:*:*",
        "cpe:2.3:a:amazon:amazon_web_services_internet_of_things_device_software_development_kit_v2:*:*:*:*:*:c\\+\\+:*:*"
    ],
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.5.3"
        },
        {
            "fixed": "1.6.1"
        },
        {
            "fixed": "1.12.7"
        }
    ]
}

Affected versions

v0.*
v0.1.1
v0.1.2
v0.1.3
v1.*
v1.0
v1.1
v1.10.0
v1.10.1
v1.10.2
v1.10.3
v1.10.4
v1.10.5
v1.10.6
v1.10.7
v1.10.8
v1.10.9
v1.11.0
v1.12.0
v1.12.1
v1.12.2
v1.12.3
v1.12.4
v1.12.5
v1.12.6
v1.2
v1.3
v1.4
v1.4.1
v1.4.2
v1.4.3
v1.5.1
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.6.0
v1.6.1
v1.6.2
v1.7.0
v1.7.1
v1.7.2
v1.7.3
v1.7.4
v1.7.5
v1.8.0
v1.8.1
v1.8.2
v1.8.3
v1.8.4
v1.9.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-40830.json"
vanir_signatures_modified 
"2026-04-12T02:00:18Z"
vanir_signatures 
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                "106376054005516871088973189801140191822",
                "111810885248206201112539425570142587712",
                "70216524490123261033673792898970622398",
                "313387830453111040804460504182177801746",
                "322925350023021315304788346643354183943",
                "111810885248206201112539425570142587712",
                "70216524490123261033673792898970622398"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "shadow/source/IotShadowClient.cpp"
        },
        "source": "https://github.com/aws/aws-iot-device-sdk-cpp-v2/commit/efd6f1b340a7f56f7558a0490a6c78fa2dd253ba",
        "signature_version": "v1",
        "id": "CVE-2021-40830-e2af83ae"
    },
    {
        "deprecated": false,
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "331930385137325414295218273715334122388",
                "324877662300095167131174494618409772811",
                "111810885248206201112539425570142587712",
                "70216524490123261033673792898970622398",
                "228889239507695077299663775706632483854",
                "238012712210270684826994199402292516922",
                "111810885248206201112539425570142587712",
                "70216524490123261033673792898970622398",
                "9550196507415204210268687641614470847",
                "126743438397327513184449791748918818973",
                "111810885248206201112539425570142587712",
                "70216524490123261033673792898970622398",
                "138041169733595194662322004251494144785",
                "304507540854630181610144898923044349045",
                "111810885248206201112539425570142587712",
                "70216524490123261033673792898970622398",
                "225551886425931129654106639982372836482",
                "39719292845961785162398473468139688238",
                "111810885248206201112539425570142587712",
                "70216524490123261033673792898970622398",
                "256381315492775329837280087712636651575",
                "225626166415092878286089914513984858904",
                "111810885248206201112539425570142587712",
                "70216524490123261033673792898970622398"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "identity/source/IotIdentityClient.cpp"
        },
        "source": "https://github.com/aws/aws-iot-device-sdk-cpp-v2/commit/efd6f1b340a7f56f7558a0490a6c78fa2dd253ba",
        "signature_version": "v1",
        "id": "CVE-2021-40830-ea462cda"
    },
    {
        "deprecated": false,
        "signature_type": "Function",
        "digest": {
            "function_hash": "661852147991210602325930671757844501",
            "length": 1009.0
        },
        "target": {
            "file": "jobs/source/IotJobsClient.cpp",
            "function": "IotJobsClient::SubscribeToNextJobExecutionChangedEvents"
        },
        "source": "https://github.com/aws/aws-iot-device-sdk-cpp-v2/commit/efd6f1b340a7f56f7558a0490a6c78fa2dd253ba",
        "signature_version": "v1",
        "id": "CVE-2021-40830-f2c35424"
    },
    {
        "deprecated": false,
        "signature_type": "Function",
        "digest": {
            "function_hash": "138688871704542781044840709501230477974",
            "length": 1017.0
        },
        "target": {
            "file": "identity/source/IotIdentityClient.cpp",
            "function": "IotIdentityClient::SubscribeToCreateCertificateFromCsrAccepted"
        },
        "source": "https://github.com/aws/aws-iot-device-sdk-cpp-v2/commit/efd6f1b340a7f56f7558a0490a6c78fa2dd253ba",
        "signature_version": "v1",
        "id": "CVE-2021-40830-f5cc599e"
    }
]
github.com/aws/aws-iot-device-sdk-java-v2

Affected ranges

Type
GIT
Repo
https://github.com/aws/aws-iot-device-sdk-java-v2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
46375e9b1bfb34109b9ff3b1eff9c770f9daa186
Database specific 
{
    "cpe": "cpe:2.3:a:amazon:amazon_web_services_internet_of_things_device_software_development_kit_v2:*:*:*:*:*:java:*:*",
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.5.0"
        }
    ]
}

Affected versions

1.*
1.2.11
1.2.8
1.2.9
v0.*
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.0.9
v1.1.0
v1.1.1
v1.2.0
v1.2.1
v1.2.10
v1.2.12
v1.2.13
v1.2.14
v1.2.15
v1.2.16
v1.2.17
v1.2.18
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.2.6
v1.2.7
v1.2.8
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.4.0
v1.4.1
v1.4.2
v1.4.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-40830.json"
github.com/awslabs/aws-c-io

Affected ranges

Type
GIT
Repo
https://github.com/awslabs/aws-c-io
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
e50f93f9a6592d4619552d3fe925fab02524df95
Database specific 
{
    "cpe": "cpe:2.3:a:amazon:amazon_web_services_aws-c-io:0.10.4:*:*:*:*:*:*:*",
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.10.4"
        }
    ]
}

Affected versions

0.*
0.2.4
v0.*
v0.1.1
v0.10.0
v0.10.1
v0.10.2
v0.10.3
v0.10.4
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8
v0.3.0
v0.3.1
v0.3.10
v0.3.11
v0.3.12
v0.3.13
v0.3.14
v0.3.15
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.4.0
v0.4.1
v0.4.10
v0.4.11
v0.4.12
v0.4.13
v0.4.14
v0.4.15
v0.4.16
v0.4.17
v0.4.18
v0.4.19
v0.4.2
v0.4.20
v0.4.21
v0.4.22
v0.4.23
v0.4.24
v0.4.25
v0.4.26
v0.4.27
v0.4.28
v0.4.29
v0.4.3
v0.4.30
v0.4.31
v0.4.32
v0.4.33
v0.4.34
v0.4.35
v0.4.36
v0.4.37
v0.4.38
v0.4.39
v0.4.4
v0.4.40
v0.4.41
v0.4.42
v0.4.43
v0.4.44
v0.4.45
v0.4.46
v0.4.47
v0.4.48
v0.4.5
v0.4.6
v0.4.7
v0.4.8
v0.4.9
v0.5.0
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.7.0
v0.7.1
v0.8.0
v0.8.1
v0.8.2
v0.8.3
v0.9.0
v0.9.1
v0.9.10
v0.9.11
v0.9.12
v0.9.13
v0.9.14
v0.9.2
v0.9.3
v0.9.4
v0.9.5
v0.9.6
v0.9.7
v0.9.8
v0.9.9

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-40830.json"