CVE-2019-20790

NameCVE-2019-20790
DescriptionOpenDMARC 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs977766

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
opendmarc (PTS)stretch1.3.2-2+deb9u2vulnerable
stretch (security)1.3.2-2+deb9u3vulnerable
buster1.3.2-6+deb10u2vulnerable
buster (security)1.3.2-6+deb10u1vulnerable
bullseye1.4.0~beta1+dfsg-6fixed
bookworm, sid1.4.1.1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opendmarcsource(unstable)1.4.0~beta1+dfsg-4977766

Notes

[buster] - opendmarc <no-dsa> (Minor issue)
[stretch] - opendmarc <no-dsa> (Minor issue)
https://bugs.launchpad.net/pypolicyd-spf/+bug/1838816
https://sourceforge.net/p/opendmarc/tickets/235/
https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdf
Issue is disputed upstream and considered "work as designed" (wontfix)
https://github.com/trusteddomainproject/OpenDMARC/blob/develop/SECURITY/CVE-2019-20790
Upstream reconsidering position:
https://github.com/trusteddomainproject/OpenDMARC/issues/158

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