A vulnerability in the TCP Normalizer of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software operating in transparent mode could allow an unauthenticated, remote attacker to poison MAC address tables, resulting in a denial of service (DoS) vulnerability. This vulnerability is due to incorrect handling of certain TCP segments when the affected device is operating in transparent mode. An attacker could exploit this vulnerability by sending a crafted TCP segment through an affected device. A successful exploit could allow the attacker to poison the MAC address tables in adjacent devices, resulting in network disruption.
References
Link | Resource |
---|---|
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-dos-JxYWMJyL | Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: cisco
Published: 2021-10-27T00:00:00
Updated: 2021-10-27T18:56:26
Reserved: 2021-06-15T00:00:00
Link: CVE-2021-34793
JSON object: View
NVD Information
Status : Modified
Published: 2021-10-27T19:15:08.563
Modified: 2023-11-07T03:36:26.283
Link: CVE-2021-34793
JSON object: View
Redhat Information
No data.
CWE