PRIOn knowledge basePRION:CVE-2023-51765Code injection
sendmail through 8.17.2 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because sendmail supports <LF>.<CR><LF> but some other popular e-mail servers do not. This is resolved in 8.18 and later versions with ‘o’ in srv_features.
| CPE | Name | Operator | Version |
|---|---|---|---|
| freebsd | lt | 11.0 | |
| enterprise_linux | eq | 8.0 | |
| enterprise_linux | eq | 9.0 | |
| sendmail | lt | 8.18.0.2 |
References
www.openwall.com/lists/oss-security/2023/12/24/1
www.openwall.com/lists/oss-security/2023/12/25/1
www.openwall.com/lists/oss-security/2023/12/26/5
www.openwall.com/lists/oss-security/2023/12/29/5
www.openwall.com/lists/oss-security/2023/12/30/1
www.openwall.com/lists/oss-security/2023/12/30/3
access.redhat.com/security/cve/CVE-2023-51765
bugzilla.redhat.com/show_bug.cgi?id=2255869
bugzilla.suse.com/show_bug.cgi?id=1218351
fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
github.com/freebsd/freebsd-src/commit/5dd76dd0cc19450133aa379ce0ce4a68ae07fb39
lwn.net/Articles/956533/
sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
www.openwall.com/lists/oss-security/2023/12/21/7
www.openwall.com/lists/oss-security/2023/12/22/7
www.youtube.com/watch?v=V8KPV96g1To
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