CVE-2023-51765
- State
- Published
- Severity
- Not scored
- Published
- Dec 24, 2023
- Updated
- Aug 2, 2024
- Reserved
- Dec 24, 2023
Description
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/
- https://www.openwall.com/lists/oss-security/2023/12/22/7
- https://www.openwall.com/lists/oss-security/2023/12/21/7
- https://github.com/freebsd/freebsd-src/commit/5dd76dd0cc19450133aa379ce0ce4a68ae07fb39#diff-afdf514b32ac88004952c11660c57bc96c3d8b2234007c1cbd8d7ed7fd7935cc
- [oss-security] 20231224 Re: Re: New SMTP smuggling attackmailing-list
- [oss-security] 20231225 Re: Re: New SMTP smuggling attackmailing-list
- https://bugzilla.suse.com/show_bug.cgi?id=1218351
- https://bugzilla.redhat.com/show_bug.cgi?id=2255869
- https://access.redhat.com/security/cve/CVE-2023-51765
- https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html
- [oss-security] 20231226 Re: New SMTP smuggling attackmailing-list
- [oss-security] 20231229 Re: Re: New SMTP smuggling attackmailing-list
- [oss-security] 20231230 Re: Re: New SMTP smuggling attackmailing-list
- [oss-security] 20231230 Re: Re: New SMTP smuggling attackmailing-list
- https://www.youtube.com/watch?v=V8KPV96g1To
- https://lwn.net/Articles/956533/
- [debian-lts-announce] 20240615 [SECURITY] [DLA 3829-1] sendmail security updatemailing-list
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