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I. Basic Information for CVE-2023-51764
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=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 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Postfix 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Postfix是一款开源的邮件传输代理。 Postfix 3.8.4之前版本存在安全漏洞，该漏洞源于允许攻击者绕过SPF保护机制进行SMTP走私。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-n/a n/a -
II. Public POCs for CVE-2023-51764
#POC DescriptionSource LinkShenlong Link
1Postfix SMTP Smuggling - Expect Script POChttps://github.com/duy-31/CVE-2023-51764POC Details
2PoC CVE-2023-51764 https://github.com/eeenvik1/CVE-2023-51764POC Details
3just idea, no cp plshttps://github.com/d4op/CVE-2023-51764-POCPOC Details
4CVE-2023-51764 pochttps://github.com/Double-q1015/CVE-2023-51764POC Details
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III. Intelligence Information for CVE-2023-51764
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IV. Related Vulnerabilities
Same product: n/a
Same vendor: n/a
V. Comments for CVE-2023-51764

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