CVE-2021-34783

Summary

CVE	CVE-2021-34783
State	PUBLIC
Assigner	[email protected]
Source Priority	CVE Program / NVD first with legacy fallback
Published	2021-10-27 19:15:00 UTC
Updated	2023-11-07 03:36:00 UTC
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.

Risk And Classification

Problem Types: CWE-20

NVD Known Affected Configurations (CPE 2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Application	Cisco	Adaptive Security Appliance	All	All	All	All
Operating System	Cisco	Adaptive Security Appliance Software	All	All	All	All
Hardware	Cisco	Asa 5505	-	All	All	All
Operating System	Cisco	Asa 5505 Firmware	009.016\(001.025\)	All	All	All
Operating System	Cisco	Asa 5505 Firmware	009.016\(001\)	All	All	All
Hardware	Cisco	Asa 5512-x	-	All	All	All
Operating System	Cisco	Asa 5512-x Firmware	009.016\(001.025\)	All	All	All
Operating System	Cisco	Asa 5512-x Firmware	009.016\(001\)	All	All	All
Hardware	Cisco	Asa 5515-x	-	All	All	All
Operating System	Cisco	Asa 5515-x Firmware	009.016\(001.025\)	All	All	All
Operating System	Cisco	Asa 5515-x Firmware	009.016\(001\)	All	All	All
Hardware	Cisco	Asa 5525-x	-	All	All	All
Operating System	Cisco	Asa 5525-x Firmware	009.016\(001.025\)	All	All	All
Operating System	Cisco	Asa 5525-x Firmware	009.016\(001\)	All	All	All
Hardware	Cisco	Asa 5545-x	-	All	All	All
Operating System	Cisco	Asa 5545-x Firmware	009.016\(001.025\)	All	All	All
Operating System	Cisco	Asa 5545-x Firmware	009.016\(001\)	All	All	All
Hardware	Cisco	Asa 5555-x	-	All	All	All
Operating System	Cisco	Asa 5555-x Firmware	009.016\(001.025\)	All	All	All
Operating System	Cisco	Asa 5555-x Firmware	009.016\(001\)	All	All	All
Hardware	Cisco	Asa 5580	-	All	All	All
Operating System	Cisco	Asa 5580 Firmware	009.016\(001.025\)	All	All	All
Operating System	Cisco	Asa 5580 Firmware	009.016\(001\)	All	All	All
Hardware	Cisco	Asa 5585-x	-	All	All	All
Operating System	Cisco	Asa 5585-x Firmware	009.016\(001.025\)	All	All	All
Operating System	Cisco	Asa 5585-x Firmware	009.016\(001\)	All	All	All
Application	Cisco	Firepower Threat Defense	All	All	All	All

References

Reference	Source	Link	Tags
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability	CISCO	tools.cisco.com
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

Legacy QID Mappings

317085 Cisco Adaptive Security Appliance Software (ASA) Software-Based Secure Sockets Layer/Transport Layer Security (SSL/TLS) Denial of Service (DoS) Vulnerability (cisco-sa-ftd-tls-decrypt-dos-BMxYjm8M)
317086 Cisco Firepower Threat Defense (FTD) Software Software-Based Secure Sockets Layer/Transport Layer Security (SSL/TLS) Denial of Service (DoS) Vulnerability (cisco-sa-ftd-tls-decrypt-dos-BMxYjm8M)