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

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CVE-2018-7750

Severity CVSS v4.0:
Pending analysis
Type:
CWE-287 Authentication Issues
Publication date:
13/03/2018
Last modified:
18/04/2022

Description

transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step.

Impact

Vector 3.x
CVSS:3.1/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:3.1/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:paramiko:paramiko:*:*:*:*:*:*:*:* 1.17.6 (excluding)
cpe:2.3:a:paramiko:paramiko:*:*:*:*:*:*:*:* 1.18.0 (including) 1.18.5 (excluding)
cpe:2.3:a:paramiko:paramiko:*:*:*:*:*:*:*:* 2.0.0 (including) 2.0.8 (excluding)
cpe:2.3:a:paramiko:paramiko:*:*:*:*:*:*:*:* 2.1.0 (including) 2.1.5 (excluding)
cpe:2.3:a:paramiko:paramiko:*:*:*:*:*:*:*:* 2.2.0 (including) 2.2.3 (excluding)
cpe:2.3:a:paramiko:paramiko:*:*:*:*:*:*:*:* 2.3.0 (including) 2.3.2 (excluding)
cpe:2.3:a:paramiko:paramiko:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:ansible_engine:2.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:ansible_engine:2.4:*:*:*:*:*:*:*
cpe:2.3:a:redhat:cloudforms:4.5:*:*:*:*:*:*:*
cpe:2.3:a:redhat:cloudforms:4.6:*:*:*:*:*:*:*
cpe:2.3:a:redhat:virtualization:4.1:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools