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CVE-2021-40111— Apache James IMAP parsing Denial Of Service

Quick assessment

Affected
Apache Software Foundation Apache James
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 3.6.1存在安全漏洞，攻击者可利用该漏洞通过精心编制的APPEND和STATUS IMAP命令触发无限循环，可用于拒绝服务攻击。

AI Predicted 5.9 Difficulty: Easy EPSS 2.12% · P81
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I. Basic Information for CVE-2021-40111

Vulnerability Information
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Vulnerability Title
Apache James IMAP parsing Denial Of Service
Source: CVE Program / CVE List V5
Vulnerability Description
In Apache James, while fuzzing with Jazzer the IMAP parsing stack, we discover that crafted APPEND and STATUS IMAP command could be used to trigger infinite loops resulting in expensive CPU computations and OutOfMemory exceptions. This can be used for a Denial Of Service attack. The IMAP user needs to be authenticated to exploit this vulnerability. This affected Apache James prior to version 3.6.1. This vulnerability had been patched in Apache James 3.6.1 and higher. We recommend the upgrade.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apache James 安全漏洞
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 3.6.1存在安全漏洞，攻击者可利用该漏洞通过精心编制的APPEND和STATUS IMAP命令触发无限循环，可用于拒绝服务攻击。
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 Apache James ~ 3.6.0 -

II. Public POCs for CVE-2021-40111

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III. Intelligence Information for CVE-2021-40111

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Mailing List Discussions for CVE-2021-40111 (2)

Same Patch Batch · Apache Software Foundation · 2022-01-04 · 5 CVEs total

CVE-2021-34797 Apache Geode project log file redaction of sensitive information vulnerability
CVE-2021-38542 Apache James vulnerable to STARTTLS command injection (IMAP and POP3)
CVE-2021-40110 Apache James IMAP vulnerable to a ReDoS
CVE-2021-40525 Sieve file storage vulnerable to path traversal attacks

IV. Related Vulnerabilities

Same product: Apache James
Same vendor: Apache Software Foundation

V. Comments for CVE-2021-40111

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