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v8n vulnerable to Inefficient Regular Expression Complexity

High severity GitHub Reviewed Published Jul 26, 2022 in imbrn/v8n • Updated Jul 31, 2023

Package

npm v8n (npm)

Affected versions

< 1.5.1

Patched versions

1.5.1

Description

Impact

Inefficient regular expression complexity of lowercase() and uppercase() regex could lead to a denial of service attack. With a formed payload 'a' + 'a'.repeat(i) + 'A', only 32 characters payload could take 29443 ms time execution when testing lowercase(). The same issue happens with uppercase().

Patches

v1.5.1

References

huntr.dev report
Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking

For more information

If you have any questions or comments about this advisory:

References

@imbrn imbrn published to imbrn/v8n Jul 26, 2022
Published by the National Vulnerability Database Aug 2, 2022
Published to the GitHub Advisory Database Oct 7, 2022
Reviewed Oct 7, 2022
Last updated Jul 31, 2023

Severity

High
7.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2022-35923

GHSA ID

GHSA-xrx9-gj26-5wx9

Source code

Credits

Checking history
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