Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2023-20046

Severity CVSS v4.0:
Pending analysis
Type:
CWE-522 Insufficiently Protected Credentials
Publication date:
09/05/2023
Last modified:
25/01/2024

Description

A vulnerability in the key-based SSH authentication feature of Cisco StarOS Software could allow an authenticated, remote attacker to elevate privileges on an affected device.<br /> <br /> This vulnerability is due to insufficient validation of user-supplied credentials. An attacker could exploit this vulnerability by sending a valid low-privileged SSH key to an affected device from a host that has an IP address that is configured as the source for a high-privileged user account. A successful exploit could allow the attacker to log in to the affected device through SSH as a high-privileged user.<br /> <br /> There are workarounds that address this vulnerability.

Impact

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

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
8.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.22.14 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.23.0 (including) 21.23.31 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.25.0 (including) 21.25.15 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.26.0 (including) 21.26.17 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.27.0 (including) 21.27.6 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.28.0 (including) 21.28.3 (excluding)
cpe:2.3:o:cisco:staros:21.23.n:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.24:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.27.m:*:*:*:*:*:*:*
cpe:2.3:o:cisco:staros:21.28.m:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5700:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:vpc-di:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:vpc-si:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools