onyx --cves cve-2023-51764
CVE-2023-51764
- score
- <0.1
- cvss
- 5.3
- epss
- 2.6%
- published
- 2023-12-24
- kev added
- —
- first seen
Postfix versions up to 3.8.5 contain an SMTP smuggling vulnerability caused by support for <LF>.<CR><LF> in email headers, letting remote attackers inject spoofed emails and bypass SPF, exploit requires specific configuration and server support.
Timeline
How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.
- Published
- Tracked by Onyx
- Public PoC https://github.com/duy-31/CVE-2023-51764
Exploit availability
Weaknesses
References 19
- http://www.openwall.com/lists/oss-security/2023/12/25/1
- https://github.com/duy-31/CVE-2023-51764
- http://www.openwall.com/lists/oss-security/2024/05/09/3
- https://lists.debian.org/debian-lts-announce/2024/01/msg00020.html
- http://www.openwall.com/lists/oss-security/2023/12/24/1
- https://github.com/eeenvik1/CVE-2023-51764
- https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQ5WXFCW2N6G2PH3JXDTYW5PH5EBQEGO/
- https://www.postfix.org/announcements/postfix-3.8.5.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRLF5SOS7TP5N7FQSEK2NFNB44ISVTZC/
- https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
- https://access.redhat.com/security/cve/CVE-2023-51764
- https://bugzilla.redhat.com/show_bug.cgi?id=2255563
- https://www.postfix.org/smtp-smuggling.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRLF5SOS7TP5N7FQSEK2NFNB44ISVTZC/
- https://lwn.net/Articles/956533/
- https://www.openwall.com/lists/oss-security/2024/01/22/1
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JQ5WXFCW2N6G2PH3JXDTYW5PH5EBQEGO/
- https://www.youtube.com/watch?v=V8KPV96g1To