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CVE-2020-15168— File size limit bypass in node-fetch

Quick assessment

Affected
node-fetch node-fetch
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.

node-fetch 2.6.1和3.0.0-beta版本中存在安全漏洞。该漏洞源于内容大小超过限制时，将永远不会抛出FetchError。

CVSS 2.6 · Low EPSS 1.69% · P76

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2020-15168

Vulnerability Information
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Vulnerability Title
File size limit bypass in node-fetch
Source: CVE Program / CVE List V5
Vulnerability Description
node-fetch before versions 2.6.1 and 3.0.0-beta.9 did not honor the size option after following a redirect, which means that when a content size was over the limit, a FetchError would never get thrown and the process would end without failure. For most people, this fix will have a little or no impact. However, if you are relying on node-fetch to gate files above a size, the impact could be significant, for example: If you don't double-check the size of the data after fetch() has completed, your JS thread could get tied up doing work on a large file (DoS) and/or cost you money in computing.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
npm node-fetch 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
node-fetch 2.6.1和3.0.0-beta版本中存在安全漏洞。该漏洞源于内容大小超过限制时，将永远不会抛出FetchError。
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
node-fetch node-fetch <2.6.1 -

II. Public POCs for CVE-2020-15168

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III. Intelligence Information for CVE-2020-15168

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Vendor Advisories for CVE-2020-15168 (1)

Other References for CVE-2020-15168 (1)

IV. Related Vulnerabilities

Same vendor: node-fetch
Same weakness: CWE-20

V. Comments for CVE-2020-15168

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