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Regular Expression Denial of Service in debug

Low severity GitHub Reviewed Published Aug 9, 2018 to the GitHub Advisory Database • Updated Mar 25, 2024

Package

npm debug (npm)

Affected versions

< 2.6.9
>= 3.0.0, < 3.1.0
>= 3.2.0, < 3.2.7
>= 4.0.0, < 4.3.1

Patched versions

2.6.9
3.1.0
3.2.7
4.3.1

Description

Affected versions of debug are vulnerable to regular expression denial of service when untrusted user input is passed into the o formatter.

As it takes 50,000 characters to block the event loop for 2 seconds, this issue is a low severity issue.

This was later re-introduced in version v3.2.0, and then repatched in versions 3.2.7 and 4.3.1.

Recommendation

Version 2.x.x: Update to version 2.6.9 or later.
Version 3.1.x: Update to version 3.1.0 or later.
Version 3.2.x: Update to version 3.2.7 or later.
Version 4.x.x: Update to version 4.3.1 or later.

References

Published to the GitHub Advisory Database Aug 9, 2018
Reviewed Jun 16, 2020
Last updated Mar 25, 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
None
User interaction
None
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:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

0.296%
(70th percentile)

Weaknesses

CVE ID

CVE-2017-16137

GHSA ID

GHSA-gxpj-cx7g-858c

Source code

Credits

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