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CVE-2020-36661— Kong lua-multipart multipart.lua is_header redos

Quick assessment

Affected
Kong lua-multipart
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.

lua-multipart是用于解析和编辑multipart/form-data数据的 Lua 库。 Kong lua-multipart 0.5.8-1版本存在安全漏洞。攻击者利用该漏洞降低了正则表达式复杂性。

CVSS 3.5 · Low EPSS 0.92% · P59

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-36661

Vulnerability Information
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Vulnerability Title
Kong lua-multipart multipart.lua is_header redos
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Kong lua-multipart 0.5.8-1. It has been declared as problematic. This vulnerability affects the function is_header of the file src/multipart.lua. The manipulation leads to inefficient regular expression complexity. Upgrading to version 0.5.9-1 is able to address this issue. The patch is identified as d632e5df43a2928fd537784a99a79dec288bf01b. It is recommended to upgrade the affected component. VDB-220642 is the identifier assigned to this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
lua-multipart 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
lua-multipart是用于解析和编辑multipart/form-data数据的 Lua 库。 Kong lua-multipart 0.5.8-1版本存在安全漏洞。攻击者利用该漏洞降低了正则表达式复杂性。
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
Kong lua-multipart 0.5.8-1 -

II. Public POCs for CVE-2020-36661

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III. Intelligence Information for CVE-2020-36661

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Patches & Fixes for CVE-2020-36661 (2)

Vendor Advisories for CVE-2020-36661 (2)

Other References for CVE-2020-36661 (1)

IV. Related Vulnerabilities

Same vendor: Kong
Same weakness: CWE-1333

V. Comments for CVE-2020-36661

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