A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation when an affected device is processing an MPLS echo-request or echo-reply packet. An attacker could exploit this vulnerability by sending malicious MPLS echo-request or echo-reply packets to an interface that is enabled for MPLS forwarding on the affected device. A successful exploit could allow the attacker to cause the MPLS OAM process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition.
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
No CVSS v3.0
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
Vendors | Products |
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Cisco |
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Configuration 1 [-]
AND |
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References
Link | Resource |
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-mpls-oam-dos-sGO9x5GM | Patch Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: cisco
Published: 2021-08-25T00:00:00
Updated: 2021-08-25T19:11:13
Reserved: 2020-11-13T00:00:00
Link: CVE-2021-1588
JSON object: View
NVD Information
Status : Modified
Published: 2021-08-25T20:15:11.537
Modified: 2023-11-07T03:28:43.003
Link: CVE-2021-1588
JSON object: View
Redhat Information
No data.