Vulnerability in Trusteddomain Opendmarc
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.022 (81.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.022 · change: +0.001
Affected products
- Trusteddomain Opendmarc — versions 1.4.0
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sourceforge.net/p/opendmarc/tickets/237/ (Exploit, Third Party Advisory)
- www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdf (Technical Description, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.debian.org/debian-lts-announce/2023/08/msg00035.html (mailing-list)
Frequently asked questions
- What is CVE-2020-12272?
- CVE-2020-12272 is a medium-severity vulnerability in Trusteddomain Opendmarc, classified under Authentication Bypass by Spoofing. CVSS score: 5.3/10. Published 2020-04-27.
- How severe is CVE-2020-12272?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2020-12272 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.