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CVE-2024-3651— Denial of Service via Quadratic Complexity in kjd/idna

Quick assessment

Affected
kjd kjd/idna
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.

idna是国际化域名 (IDNA) 协议。 idna 存在安全漏洞，该漏洞源于通过资源消耗会导致潜在的拒绝服务(DoS)。

AI Predicted 5.3 Difficulty: Easy EPSS 1.39% · P72

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-3651

Vulnerability Information
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Vulnerability Title
Denial of Service via Quadratic Complexity in kjd/idna
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in the kjd/idna library, specifically within the `idna.encode()` function, affecting version 3.6. The issue arises from the function's handling of crafted input strings, which can lead to quadratic complexity and consequently, a denial of service condition. This vulnerability is triggered by a crafted input that causes the `idna.encode()` function to process the input with considerable computational load, significantly increasing the processing time in a quadratic manner relative to the input size.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
idna 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
idna是国际化域名 (IDNA) 协议。 idna 存在安全漏洞，该漏洞源于通过资源消耗会导致潜在的拒绝服务(DoS)。
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
kjd kjd/idna unspecified ~ 3.7 -

II. Public POCs for CVE-2024-3651

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2024-3651

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Patches & Fixes for CVE-2024-3651 (1)

Vendor Advisories for CVE-2024-3651 (1)

IV. Related Vulnerabilities

Same vendor: kjd
Same weakness: CWE-1333

V. Comments for CVE-2024-3651

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