Description
A vulnerability in the software-based SSL/TLS message handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL/TLS decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: Datagram TLS (DTLS) messages cannot be used to exploit this vulnerability.
Published: 2021-10-27
Score: 8.6 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-21433 A vulnerability in the software-based SSL/TLS message handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL/TLS decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: Datagram TLS (DTLS) messages cannot be used to exploit this vulnerability.
History

Thu, 07 Nov 2024 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Cisco Adaptive Security Appliance Software Asa 5505 Asa 5505 Firmware Asa 5512-x Asa 5512-x Firmware Asa 5515-x Asa 5515-x Firmware Asa 5525-x Asa 5525-x Firmware Asa 5545-x Asa 5545-x Firmware Asa 5555-x Asa 5555-x Firmware Asa 5580 Asa 5580 Firmware Asa 5585-x Asa 5585-x Firmware Firepower Threat Defense
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-07T21:46:04.938Z

Reserved: 2021-06-15T00:00:00.000Z

Link: CVE-2021-34783

cve-icon Vulnrichment

Updated: 2024-08-04T00:19:48.253Z

cve-icon NVD

Status : Modified

Published: 2021-10-27T19:15:08.290

Modified: 2024-11-21T06:11:11.547

Link: CVE-2021-34783

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses