ghsa-j5jm-hg4x-w8rx
Vulnerability from github
Published
2023-12-24 06:30
Modified
2024-06-10 18:30
Severity ?
Details
Postfix through 3.8.4 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining (or certain other options that exist in recent versions). Remote attackers can use a published exploitation technique to inject e-mail messages that appear to originate from the Postfix server, allowing bypass of an SPF protection mechanism. This occurs because Postfix supports
{
"affected": [],
"aliases": [
"CVE-2023-51764"
],
"database_specific": {
"cwe_ids": [
"CWE-345"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-12-24T05:15:08Z",
"severity": "MODERATE"
},
"details": "Postfix through 3.8.4 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining (or certain other options that exist in recent versions). Remote attackers can use a published exploitation technique to inject e-mail messages that appear to originate from the Postfix server, allowing bypass of an SPF protection mechanism. This occurs because Postfix supports \u003cLF\u003e.\u003cCR\u003e\u003cLF\u003e but some other popular e-mail servers do not. To prevent attack variants (by always disallowing \u003cLF\u003e without \u003cCR\u003e), a different solution is required: the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23, 3.6.13, 3.7.9, 3.8.4, or 3.9.",
"id": "GHSA-j5jm-hg4x-w8rx",
"modified": "2024-06-10T18:30:51Z",
"published": "2023-12-24T06:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51764"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-51764"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255563"
},
{
"type": "WEB",
"url": "https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.html"
},
{
"type": "WEB",
"url": "https://github.com/duy-31/CVE-2023-51764"
},
{
"type": "WEB",
"url": "https://github.com/eeenvik1/CVE-2023-51764"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00020.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQ5WXFCW2N6G2PH3JXDTYW5PH5EBQEGO"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRLF5SOS7TP5N7FQSEK2NFNB44ISVTZC"
},
{
"type": "WEB",
"url": "https://lwn.net/Articles/956533"
},
{
"type": "WEB",
"url": "https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2024/01/22/1"
},
{
"type": "WEB",
"url": "https://www.postfix.org/announcements/postfix-3.8.5.html"
},
{
"type": "WEB",
"url": "https://www.postfix.org/smtp-smuggling.html"
},
{
"type": "WEB",
"url": "https://www.youtube.com/watch?v=V8KPV96g1To"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/12/24/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/12/25/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/05/09/3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.