What’s Vulnerable › Vulnerabilities

CVE-2015-20110

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-31 · updated 2026-06-17
• Weakness: CWE-307

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.

Affected products

• Jhipster: before 2.23.0 — fixed in 2.23.0

How to fix

Upgrade to a fixed version: Jhipster 2.23.0. Check the vendor advisory for mitigations.

References

• https://github.com/jhipster/generator-jhipster/commit/79fe5626cb1bb80f9ac86cf46980748e65d2bdbc
• https://github.com/jhipster/generator-jhipster/commit/7c49ab3d45dc4921b831a2ca55fb1e2a2db1ee25
• https://github.com/jhipster/generator-jhipster/compare/v2.22.0...v2.23.0
• https://github.com/jhipster/generator-jhipster/issues/2095
• https://github.com/jhipster/generator-jhipster/commit/79fe5626cb1bb80f9ac86cf46980748e65d2bdbc
• https://github.com/jhipster/generator-jhipster/commit/7c49ab3d45dc4921b831a2ca55fb1e2a2db1ee25
• https://github.com/jhipster/generator-jhipster/compare/v2.22.0...v2.23.0
• https://github.com/jhipster/generator-jhipster/issues/2095

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