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CVE-2019-20786

Good to know:

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Date: April 19, 2020

handleIncomingPacket in conn.go in Pion DTLS before 1.5.2 lacks a check for application data with epoch 0, which allows remote attackers to inject arbitrary unencrypted data after handshake completion.

Language: Go

Severity Score

Related Resources (9)

https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdf
https://nvd.nist.gov/vuln/detail/CVE-2019-20786
https://pkg.go.dev/vuln/GO-2020-0038
https://github.com/pion/dtls/compare/v1.5.1...v1.5.2
https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0
https://github.com/pion/dtls/pull/128
https://www.usenix.org/conference/usenixsecurity20/presentation/fiterau-brostean
https://github.com/pion/dtls
https://www.mend.io/vulnerability-database/CVE-2019-20786

Severity Score

Weakness Type (CWE)

Improper Authentication

CWE-287

Top Fix

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Upgrade Version

Upgrade to version github.com/pion/dtls - v1.5.2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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