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The `size` option isn't honored after following a redirect in node-fetch

Low severity GitHub Reviewed Published Sep 9, 2020 in node-fetch/node-fetch • Updated Jul 15, 2024

Package

npm node-fetch (npm)

Affected versions

>= 3.0.0-beta.1, <= 3.0.0-beta.8
>= 2.0.0, < 2.6.1

Patched versions

3.0.0-beta.9
2.6.1

Description

Impact

Node Fetch 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.

Patches

We released patched versions for both stable and beta channels:

  • For v2: 2.6.1
  • For v3: 3.0.0-beta.9

Workarounds

None, it is strongly recommended to update as soon as possible.

For more information

If you have any questions or comments about this advisory:

  • Open an issue in node-fetch
  • Contact one of the core maintainers.

References

@xxczaki xxczaki published to node-fetch/node-fetch Sep 9, 2020
Reviewed Sep 10, 2020
Published to the GitHub Advisory Database Sep 10, 2020
Last updated Jul 15, 2024

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L

EPSS score

0.104%
(43rd percentile)

CVE ID

CVE-2020-15168

GHSA ID

GHSA-w7rc-rwvf-8q5r

Source code

Credits

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