Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2017-2773

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
13/06/2017
Last modified:
20/04/2025

Description

An issue was discovered in Pivotal PCF Elastic Runtime 1.6.x versions prior to 1.6.60, 1.7.x versions prior to 1.7.41, 1.8.x versions prior to 1.8.23, and 1.9.x versions prior to 1.9.1. Incomplete validation logic in JSON Web Token (JWT) libraries can allow unprivileged attackers to impersonate other users in multiple components included in PCF Elastic Runtime, aka an "Unauthenticated JWT signing algorithm in multiple components" issue.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.1:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.2:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.3:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.4:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.5:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.6:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.7:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.8:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.9:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.10:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.11:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.12:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.13:*:*:*:*:*:*:*
cpe:2.3:a:pivotal_software:cloud_foundry_elastic_runtime:1.6.14:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools