CVE-2021-34783
published 2021-10-27CVE-2021-34783: A vulnerability in the software-based SSL/TLS message handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software…
PriorityP343high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.55%
72.4th percentile
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.
Affected
27 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | adaptive_security_appliance | — | — |
| cisco | adaptive_security_appliance_software | >= 9.12.0 < 9.12.4.29 | 9.12.4.29 |
| cisco | adaptive_security_appliance_software | >= 9.14.0 < 9.14.3.9 | 9.14.3.9 |
| cisco | adaptive_security_appliance_software | >= 9.15.0 < 9.15.1.17 | 9.15.1.17 |
| cisco | adaptive_security_appliance_software | >= 9.16.0 < 9.16.2 | 9.16.2 |
| cisco | adaptive_security_appliance_software | >= 9.8.0 < 9.8.4.40 | 9.8.4.40 |
| cisco | asa_5505_firmware | — | — |
| cisco | asa_5505_firmware | — | — |
| cisco | asa_5512-x_firmware | — | — |
| cisco | asa_5512-x_firmware | — | — |
| cisco | asa_5515-x_firmware | — | — |
| cisco | asa_5515-x_firmware | — | — |
| cisco | asa_5525-x_firmware | — | — |
| cisco | asa_5525-x_firmware | — | — |
| cisco | asa_5545-x_firmware | — | — |
| cisco | asa_5545-x_firmware | — | — |
| cisco | asa_5555-x_firmware | — | — |
| cisco | asa_5555-x_firmware | — | — |
| cisco | asa_5580_firmware | — | — |
| cisco | asa_5580_firmware | — | — |
| cisco | asa_5585-x_firmware | — | — |
| cisco | asa_5585-x_firmware | — | — |
| cisco | cisco_adaptive_security_appliance_software | — | — |
| cisco | firepower_threat_defense | >= 6.4.0 < 6.4.0.13 | 6.4.0.13 |
| cisco | firepower_threat_defense | >= 6.6.0 < 6.6.5 | 6.6.5 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.07.8HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
vendor_cisco8.6HIGH
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Cisco
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability
vendor_cisco·2021-10-27·CVSS 8.6
CVE-2021-34783 [HIGH] CWE-119 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability
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: Datagra
Cisco
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability
vendor_cisco·CVSS 3.1
CVE-2021-34783 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability
CVE-2021-34783: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability
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.
GHSA
GHSA-vwpf-cvqf-r3h9: A vulnerability in the software-based SSL/TLS message handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) S
ghsa_unreviewed·2022-05-24
CVE-2021-34783 [HIGH] CWE-119 GHSA-vwpf-cvqf-r3h9: A vulnerability in the software-based SSL/TLS message handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) S
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-10-27
Published