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

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CVE-2021-1367

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
24/02/2021
Last modified:
07/11/2023

Description

A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted PIM packet to an affected device. A successful exploit could allow the attacker to cause a traffic loop, resulting in a DoS condition.

Impact

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

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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

Base Score 3.x
4.30
Severity 3.x
MEDIUM
Vector 2.0
AV:A/AC:M/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 2.90 LOW
Vector: AV:A/AC:M/Au:N/C:N/I:N/A:P

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

Base Score 2.0
2.90
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:9.3\(5\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9000v_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92160yc-x_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92300yc_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92304qc_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_92348gc-x_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9236c_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9272q_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-ex-24_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-ex_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-fx-24:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93108tc-fx_switch:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93120tx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_93128tx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9316d-gx:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools