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generator-jhipster allows a timing attack against validateToken due to a string comparison that stops at the first character

High severity GitHub Reviewed Published Oct 31, 2023 to the GitHub Advisory Database • Updated Nov 17, 2023

Package

npm generator-jhipster (npm)

Affected versions

< 2.23.0

Patched versions

2.23.0

Description

JHipster generator-jhipster before 2.23.0 allows a timing attack against validateToken due to a string comparison that stops at the first character that is different. Attackers can guess tokens by brute forcing one character at a time and observing the timing. This of course drastically reduces the search space to a linear amount of guesses based on the token length times the possible characters.

References

Published by the National Vulnerability Database Oct 31, 2023
Published to the GitHub Advisory Database Oct 31, 2023
Reviewed Oct 31, 2023
Last updated Nov 17, 2023

Severity

High

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
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.102%
(43rd percentile)

Weaknesses

CVE ID

CVE-2015-20110

GHSA ID

GHSA-4gpm-r23h-gprw

Source code

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