CVE-2020-12063

** DISPUTED ** 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.
References
Link Resource
https://www.openwall.com/lists/oss-security/2020/04/23/3 Mailing List Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/04/23/12 Exploit Mailing List Third Party Advisory
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Configurations

Configuration 1 (hide)

cpe:2.3:a:postfix:postfix:2.10.1:*:*:*:*:*:*:*

Information

Published : 2020-04-24 05:15

Updated : 2022-05-03 09:04


NVD link : CVE-2020-12063

Mitre link : CVE-2020-12063


JSON object : View

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Products Affected

postfix

  • postfix