CVE-2020-12272

OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.

CVSS v3.1 NVD

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS

2.21% chance of exploitation in the next 30 days, 82nd percentile

Published

2020-04-27

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://sourceforge.net/p/opendmarc/tickets/237/

Security advisories

• https://sourceforge.net/p/opendmarc/tickets/237
• https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdf

References

• CVE Record
• NVD entry