Skip to content

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in Pivotal CredHub Service Broker

High severity GitHub Reviewed Published Nov 29, 2018 to the GitHub Advisory Database • Updated Jan 9, 2023

Package

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

Affected versions

< 1.1.0

Patched versions

1.1.0

Description

Pivotal CredHub Service Broker, versions prior to 1.1.0, uses a guessable form of random number generation in creating service broker's UAA client. A remote malicious user may guess the client secret and obtain or modify credentials for users of the CredHub Service.

References

Published to the GitHub Advisory Database Nov 29, 2018
Reviewed Jun 16, 2020
Last updated Jan 9, 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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS score

0.058%
(25th percentile)

Weaknesses

CVE ID

CVE-2018-15795

GHSA ID

GHSA-q3jg-4c82-j4xh

Source code

No known source code
Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.