UBUNTU-CVE-2023-51765

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2023-51765
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-51765.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2023-51765
Upstream
Published
2023-12-24T06:15:00Z
Modified
2025-10-24T05:02:23Z
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
  • Ubuntu - medium
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

Ubuntu:14.04:LTS / sendmail

Package

Name
sendmail
Purl
pkg:deb/ubuntu/sendmail@8.14.4-4.1ubuntu1.1?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.14.4-2.1ubuntu4
8.14.4-2.1ubuntu5
8.14.4-4.1ubuntu1
8.14.4-4.1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.14.4-4.1ubuntu1.1",
            "binary_name": "libmilter-dev"
        },
        {
            "binary_version": "8.14.4-4.1ubuntu1.1",
            "binary_name": "libmilter1.0.1"
        },
        {
            "binary_version": "8.14.4-4.1ubuntu1.1",
            "binary_name": "rmail"
        },
        {
            "binary_version": "8.14.4-4.1ubuntu1.1",
            "binary_name": "sendmail"
        },
        {
            "binary_version": "8.14.4-4.1ubuntu1.1",
            "binary_name": "sendmail-base"
        },
        {
            "binary_version": "8.14.4-4.1ubuntu1.1",
            "binary_name": "sendmail-bin"
        },
        {
            "binary_version": "8.14.4-4.1ubuntu1.1",
            "binary_name": "sendmail-cf"
        },
        {
            "binary_version": "8.14.4-4.1ubuntu1.1",
            "binary_name": "sensible-mda"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-51765.json"

Ubuntu:16.04:LTS / sendmail

Package

Name
sendmail
Purl
pkg:deb/ubuntu/sendmail@8.15.2-3?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.14.9-4
8.15.2-2
8.15.2-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.15.2-3",
            "binary_name": "libmilter-dev"
        },
        {
            "binary_version": "8.15.2-3",
            "binary_name": "libmilter1.0.1"
        },
        {
            "binary_version": "8.15.2-3",
            "binary_name": "rmail"
        },
        {
            "binary_version": "8.15.2-3",
            "binary_name": "sendmail"
        },
        {
            "binary_version": "8.15.2-3",
            "binary_name": "sendmail-base"
        },
        {
            "binary_version": "8.15.2-3",
            "binary_name": "sendmail-bin"
        },
        {
            "binary_version": "8.15.2-3",
            "binary_name": "sendmail-cf"
        },
        {
            "binary_version": "8.15.2-3",
            "binary_name": "sensible-mda"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-51765.json"

Ubuntu:18.04:LTS / sendmail

Package

Name
sendmail
Purl
pkg:deb/ubuntu/sendmail@8.15.2-10?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.15.2-8ubuntu1
8.15.2-9ubuntu1
8.15.2-10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.15.2-10",
            "binary_name": "libmilter-dev"
        },
        {
            "binary_version": "8.15.2-10",
            "binary_name": "libmilter1.0.1"
        },
        {
            "binary_version": "8.15.2-10",
            "binary_name": "rmail"
        },
        {
            "binary_version": "8.15.2-10",
            "binary_name": "sendmail"
        },
        {
            "binary_version": "8.15.2-10",
            "binary_name": "sendmail-base"
        },
        {
            "binary_version": "8.15.2-10",
            "binary_name": "sendmail-bin"
        },
        {
            "binary_version": "8.15.2-10",
            "binary_name": "sendmail-cf"
        },
        {
            "binary_version": "8.15.2-10",
            "binary_name": "sensible-mda"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-51765.json"

Ubuntu:20.04:LTS / sendmail

Package

Name
sendmail
Purl
pkg:deb/ubuntu/sendmail@8.15.2-18?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.15.2-13
8.15.2-17ubuntu1
8.15.2-18

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.15.2-18",
            "binary_name": "libmilter-dev"
        },
        {
            "binary_version": "8.15.2-18",
            "binary_name": "libmilter1.0.1"
        },
        {
            "binary_version": "8.15.2-18",
            "binary_name": "rmail"
        },
        {
            "binary_version": "8.15.2-18",
            "binary_name": "sendmail"
        },
        {
            "binary_version": "8.15.2-18",
            "binary_name": "sendmail-base"
        },
        {
            "binary_version": "8.15.2-18",
            "binary_name": "sendmail-bin"
        },
        {
            "binary_version": "8.15.2-18",
            "binary_name": "sendmail-cf"
        },
        {
            "binary_version": "8.15.2-18",
            "binary_name": "sensible-mda"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-51765.json"

Ubuntu:22.04:LTS / sendmail

Package

Name
sendmail
Purl
pkg:deb/ubuntu/sendmail@8.15.2-22ubuntu3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.15.2-22ubuntu2
8.15.2-22ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "8.15.2-22ubuntu3",
            "binary_name": "libmilter-dev"
        },
        {
            "binary_version": "8.15.2-22ubuntu3",
            "binary_name": "libmilter1.0.1"
        },
        {
            "binary_version": "8.15.2-22ubuntu3",
            "binary_name": "rmail"
        },
        {
            "binary_version": "8.15.2-22ubuntu3",
            "binary_name": "sendmail"
        },
        {
            "binary_version": "8.15.2-22ubuntu3",
            "binary_name": "sendmail-base"
        },
        {
            "binary_version": "8.15.2-22ubuntu3",
            "binary_name": "sendmail-bin"
        },
        {
            "binary_version": "8.15.2-22ubuntu3",
            "binary_name": "sendmail-cf"
        },
        {
            "binary_version": "8.15.2-22ubuntu3",
            "binary_name": "sensible-mda"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-51765.json"