Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2019-1809

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/05/2019
Last modified:
24/03/2023

Description

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
6.70
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.60 MEDIUM
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

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

Base Score 2.0
4.60
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 7.3 (including) 8.1\(1a\) (excluding)
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 8.2 (including) 8.3\(1\) (excluding)
cpe:2.3:h:cisco:mds_9706:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9710:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9718:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 7.2 (including) 7.3\(3\)d1\(1\) (excluding)
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 8.0 (including) 8.2\(3\) (excluding)
cpe:2.3:h:cisco:7000_10-slot:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:7000_18-slot:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:7000_4-slot:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:7000_9-slot:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:7700_10-slot:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:7700_18-slot:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:7700_2-slot:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:7700_6-slot:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools