Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1xNHEyLTkzcHctcXdnZs3t2g

Issuer validation regression in Spring Cloud SSO Connector

Spring Cloud SSO Connector, version 2.1.2, contains a regression which disables issuer validation in resource servers that are not bound to the SSO service. In PCF deployments with multiple SSO service plans, a remote attacker can authenticate to unbound resource servers which use this version of the SSO Connector with tokens generated from another service plan.

Mitigation

Users of affected versions should apply the following mitigation:

• Releases that have fixed this issue include:Spring Cloud SSO Connector: 2.1.3
• Alternatively, you can perform one of the following workarounds:Bind your resource server to the SSO service plan via a service instance bindingSet “sso.connector.cloud.available=true” within your Spring application properties

Permalink: https://github.com/advisories/GHSA-q4q2-93pw-qwgf
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1xNHEyLTkzcHctcXdnZs3t2g
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: 11 months ago

CVSS Score: 8.1
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Percentage: 0.00296
EPSS Percentile: 0.68874

Identifiers: GHSA-q4q2-93pw-qwgf, CVE-2018-1256
References:

• https://nvd.nist.gov/vuln/detail/CVE-2018-1256
• https://pivotal.io/security/cve-2018-1256
• https://github.com/pivotal-cf/spring-cloud-sso-connector/commit/ef647a2acf2363c6018e8543d665ac8862593372
• https://github.com/advisories/GHSA-q4q2-93pw-qwgf

Repository: https://github.com/pivotal-cf/spring-cloud-sso-connector
Blast Radius: 6.3

Affected Packages