CVE-2020-12063
A certain Postfix 2.10.1-7 package could allow an attacker to send an email from an arbitrary-looking sender via a homoglyph attack, as demonstrated by the similarity of \xce\xbf to the 'o' character. This is potentially relevant when the /etc/postfix/sender_login feature is used, because a spoofed outbound message that uses a configured sender address is blocked with a "Sender address rejected: not logged in" error message, but a spoofed outbound message that uses a homoglyph of a configured sender address is not blocked. NOTE: some third parties argue that any missed blocking of spoofed outbound messages - except for exact matches to a sender address in the /etc/postfix/sender_login file - is outside the design goals of Postfix and thus cannot be considered a Postfix vulnerability
- Affected products
- Postfix
- Postfix
- = 2.10.1
- CVSS 3.1
- 5.3 MEDIUM
- EPSS
- 0.9% (57th percentile)
- NVD status
- Modified
- Published
- 2020-04-24
No indexed exploits for CVE-2020-12063 yet
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No exploit for CVE-2020-12063 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.