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CVE-2021-1539

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/06/2021
Last modified:
07/11/2023

Description

Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

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
Vector 2.0
AV:N/AC:L/Au:S/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.50
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.16.9 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.17.0 (including) 21.17.10 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.18.0 (including) 21.18.16 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.19.0 (including) 21.19.11 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.19.n (including) 21.19.n7 (excluding)
cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* 21.20.0 (including) 21.20.8 (excluding)
cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_5700:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:virtualized_packet_core:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools