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CVE-2023-51747— SMTP smuggling in Apache James

Quick assessment

Affected
Apache Software Foundation Apache James server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache James是美国阿帕奇（Apache）基金会的一个完全用 Java 编写的开源 Smtp 和 Pop3 邮件传输代理和 Nntp 新闻服务器。 Apache James 3.8.1之前版本和3.7.5之前版本存在输入验证错误漏洞，该漏洞源于发送方和接收方之间存在行分隔符处理差异，攻击者可利用这种差异进行SMTP走私攻击。

AI Predicted 7.5 Difficulty: Moderate EPSS 1.04% · P63

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-51747

Vulnerability Information
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Vulnerability Title
SMTP smuggling in Apache James
Source: CVE Program / CVE List V5
Vulnerability Description
Apache James prior to versions 3.8.1 and 3.7.5 is vulnerable to SMTP smuggling. A lenient behaviour in line delimiter handling might create a difference of interpretation between the sender and the receiver which can be exploited by an attacker to forge an SMTP envelop, allowing for instance to bypass SPF checks. The patch implies enforcement of CRLF as a line delimiter as part of the DATA transaction. We recommend James users to upgrade to non vulnerable versions.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Apache James 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache James是美国阿帕奇（Apache）基金会的一个完全用 Java 编写的开源 Smtp 和 Pop3 邮件传输代理和 Nntp 新闻服务器。 Apache James 3.8.1之前版本和3.7.5之前版本存在输入验证错误漏洞，该漏洞源于发送方和接收方之间存在行分隔符处理差异，攻击者可利用这种差异进行SMTP走私攻击。
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

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache James server 0 ~ 3.7.4 -

II. Public POCs for CVE-2023-51747

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III. Intelligence Information for CVE-2023-51747

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Mailing List Discussions for CVE-2023-51747 (2)

Security Blog Posts for CVE-2023-51747 (1)

Other References for CVE-2023-51747 (1)

Same Patch Batch · Apache Software Foundation · 2024-02-27 · 6 CVEs total

CVE-2023-50379 Apache Ambari: authenticated users could perform command injection to perform RCE
CVE-2023-51518 Apache James server: Privilege escalation via JMX pre-authentication deserialisation
CVE-2024-27905 Apache Aurora: padding oracle can allow construction an authentication cookie
CVE-2024-21742 Apache James Mime4J: Mime4J DOM header injection
CVE-2023-50380 Apache Ambari: authenticated users could perform XXE to read arbitrary files on the server

IV. Related Vulnerabilities

Same product: Apache James server
Same vendor: Apache Software Foundation
Same weakness: CWE-20

V. Comments for CVE-2023-51747

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