DEBIAN-CVE-2023-51765

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Source
https://security-tracker.debian.org/tracker/CVE-2023-51765
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-51765.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2023-51765
Upstream
Published
2023-12-24T06:15:07Z
Modified
2025-09-25T23:28:56.466702Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:11 / sendmail

Package

Name
sendmail
Purl
pkg:deb/debian/sendmail?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.15.2-22+deb11u1

Affected versions

8.*

8.15.2-22

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / sendmail

Package

Name
sendmail
Purl
pkg:deb/debian/sendmail?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.17.1.9-2+deb12u1

Affected versions

8.*

8.17.1.9-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / sendmail

Package

Name
sendmail
Purl
pkg:deb/debian/sendmail?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.18.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / sendmail

Package

Name
sendmail
Purl
pkg:deb/debian/sendmail?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.18.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}