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CVE-2019-20790

Good to know:

Date: April 27, 2020

OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-spf 2.0.2, allows attacks that bypass SPF and DMARC authentication in situations where the HELO field is inconsistent with the MAIL FROM field.

Language: C

Severity Score

9.8

Related Resources (11)

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-20790

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/

Url: https://bugs.launchpad.net/pypolicyd-spf/+bug/1838816

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/

Url: https://security-tracker.debian.org/tracker/CVE-2019-20790

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/

Url: https://sourceforge.net/p/opendmarc/tickets/235/

Url: https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdf

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-20790

Url: https://www.mend.io/vulnerability-database/CVE-2019-20790

Severity Score

9.8

Weakness Type (CWE)

Authentication Bypass by Spoofing

CWE-290

CVSS v3.1

Base Score:	9.8
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:	6.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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