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Insufficient Entropy in Spring Security

Moderate severity GitHub Reviewed Published Jun 15, 2020 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

maven org.springframework.security:spring-security-core (Maven)

Affected versions

>= 5.3.0, < 5.3.2
>= 5.2.0, < 5.2.4
>= 5.1.0, < 5.1.10
>= 5.0.0, < 5.0.16
< 4.2.16

Patched versions

5.3.2
5.2.4
5.1.10
5.0.16
4.2.16

Description

Spring Security versions 5.3.x prior to 5.3.2, 5.2.x prior to 5.2.4, 5.1.x prior to 5.1.10, 5.0.x prior to 5.0.16 and 4.2.x prior to 4.2.16 use a fixed null initialization vector with CBC Mode in the implementation of the queryable text encryptor. A malicious user with access to the data that has been encrypted using such an encryptor may be able to derive the unencrypted values using a dictionary attack.

References

Published by the National Vulnerability Database May 14, 2020
Reviewed Jun 11, 2020
Published to the GitHub Advisory Database Jun 15, 2020
Last updated Feb 1, 2023

Severity

Moderate

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

EPSS score

0.135%
(50th percentile)

CVE ID

CVE-2020-5408

GHSA ID

GHSA-2ppp-9496-p23q

Source code

No known source code
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