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I. Basic Information for CVE-2022-4891
Vulnerability Information

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Vulnerability Title
Sisimai string.rb to_plain redos
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been found in Sisimai up to 4.25.14p11 and classified as problematic. This vulnerability affects the function to_plain of the file lib/sisimai/string.rb. The manipulation leads to inefficient regular expression complexity. The exploit has been disclosed to the public and may be used. Upgrading to version 4.25.14p12 is able to address this issue. The name of the patch is 51fe2e6521c9c02b421b383943dc9e4bbbe65d4e. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218452.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1333
Source: NVD (National Vulnerability Database)
Vulnerability Title
rb-sisimai 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rb-sisimai是一个 Ruby 库,用于分析 RFC5322 退回电子邮件并根据解析结果生成结构化数据。 rb-sisimai 4.25.14p11版本及之前版本存在安全漏洞。攻击者利用该漏洞导致正则表达式复杂度降低。
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
-Sisimai 4.25.14p11 -
II. Public POCs for CVE-2022-4891
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III. Intelligence Information for CVE-2022-4891
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