CVE-2023-51764

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-51764
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-51764.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-51764
Related
Published
2023-12-24T05:15:08Z
Modified
2024-09-18T03:24:22.818724Z
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

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpddatarestrictions=rejectunauthpipelining and smtpddiscardehlokeywords=chunking (or certain other options that exist in recent versions). 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 Postfix supports <LF>.<CR><LF> but some other popular e-mail servers do not. To prevent attack variants (by always disallowing <LF> without <CR>), a different solution is required, such as the smtpdforbidbarenewline=yes option with a Postfix minimum version of 3.5.23, 3.6.13, 3.7.9, 3.8.4, or 3.9.

References

Affected packages

Debian:11 / postfix

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.23-0+deb11u1

Affected versions

3.*

3.5.6-1
3.5.13-0+deb11u1
3.5.13-1
3.5.17-0+deb11u1
3.5.18-0+deb11u1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / postfix

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.9-0+deb12u1

Affected versions

3.*

3.7.5-2
3.7.6-0+deb12u1
3.7.6-0+deb12u2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / postfix

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.8.4-1

Affected versions

3.*

3.7.5-2
3.8.1-1
3.8.1-2
3.8.2-1
3.8.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}