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CVE-2019-19702

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Date: December 10, 2019

The modoboa-dmarc plugin 1.1.0 for Modoboa is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this to perform a denial of service against the DMARC reporting functionality, such as by referencing the /dev/random file within XML documents that are emailed to the address in the rua field of the DMARC records of a domain.

Language: Python

Severity Score

Related Resources (7)

https://github.com/modoboa/modoboa-dmarc/commit/14c29e0ad9487bdbe4cc0bd1f8bc711285bf9933
https://github.com/pypa/advisory-database/tree/main/vulns/modoboa-dmarc/PYSEC-2019-105.yaml
https://github.com/modoboa/modoboa-dmarc/issues/38
https://nvd.nist.gov/vuln/detail/CVE-2019-19702
https://github.com/modoboa/modoboa-dmarc
https://github.com/pypa/advisory-database/tree/main/vulns/modoboa/PYSEC-2019-251.yaml
https://www.mend.io/vulnerability-database/CVE-2019-19702

Severity Score

Weakness Type (CWE)

Improper Restriction of XML External Entity Reference ('XXE')

CWE-611

XML Injection (aka Blind XPath Injection)

CWE-91

Top Fix

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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): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

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

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