CVE-2019-3795: Insecure Randomness When Using a SecureRandom Instance Constructed by Spring Security

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-04-09 · updated 2026-06-17
Weakness: CWE-330

Description

Spring Security versions 4.2.x prior to 4.2.12, 5.0.x prior to 5.0.12, and 5.1.x prior to 5.1.5 contain an insecure randomness vulnerability when using SecureRandomFactoryBean#setSeed to configure a SecureRandom instance. In order to be impacted, an honest application must provide a seed and make the resulting random material available to an attacker for inspection.

Affected products

Debian Linux: 8.0
Spring Security: from 4.2.0 before 4.2.12; from 5.0.0 before 5.0.12; from 5.1.0 before 5.1.5 — fixed in 4.2.12, 5.0.12, 5.1.5
Spring Security: from 5.0 before 5.0.11.RELEASE; from 5.1 before 5.1.4.RELEASE; from 4.2 before 4.2.11.RELEASE — fixed in 5.0.11.RELEASE, 5.1.4.RELEASE, 4.2.11.RELEASE

How to fix

Upgrade to a fixed version: Spring Security 4.2.12, 5.0.12, 5.1.5; Spring Security 5.0.11.RELEASE, 5.1.4.RELEASE, 4.2.11.RELEASE. Check the vendor advisory for mitigations.

References

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