CVE-2021-34792

A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) 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 resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

CVSS v3 7.5 HIGH
CVSS v2.0 7.8 HIGH

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

7.8^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 10.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-dos-Unk689XY	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::
	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::

Configuration 2 (hide)

AND

cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:cisco:asa_5512-x_firmware:009.014\(001.150\):::::::*
	cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(001.211\):::::::*
	cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(001.220\):::::::*
	cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(015.050\):::::::*

Configuration 3 (hide)

AND

cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:cisco:asa_5505_firmware:009.014\(001.150\):::::::*
	cpe:2.3:o:cisco:asa_5505_firmware:099.017\(001.211\):::::::*
	cpe:2.3:o:cisco:asa_5505_firmware:099.017\(001.220\):::::::*
	cpe:2.3:o:cisco:asa_5505_firmware:099.017\(015.050\):::::::*

Configuration 4 (hide)

AND

cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:cisco:asa_5515-x_firmware:009.014\(001.150\):::::::*
	cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(001.211\):::::::*
	cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(001.220\):::::::*
	cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(015.050\):::::::*

Configuration 5 (hide)

AND

cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:cisco:asa_5525-x_firmware:009.014\(001.150\):::::::*
	cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(001.211\):::::::*
	cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(001.220\):::::::*
	cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(015.050\):::::::*

Configuration 6 (hide)

AND

cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:cisco:asa_5545-x_firmware:009.014\(001.150\):::::::*
	cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(001.211\):::::::*
	cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(001.220\):::::::*
	cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(015.050\):::::::*

Configuration 7 (hide)

AND

cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:cisco:asa_5555-x_firmware:009.014\(001.150\):::::::*
	cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(001.211\):::::::*
	cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(001.220\):::::::*
	cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(015.050\):::::::*

Configuration 8 (hide)

AND

cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:cisco:asa_5580_firmware:009.014\(001.150\):::::::*
	cpe:2.3:o:cisco:asa_5580_firmware:099.017\(001.211\):::::::*
	cpe:2.3:o:cisco:asa_5580_firmware:099.017\(001.220\):::::::*
	cpe:2.3:o:cisco:asa_5580_firmware:099.017\(015.050\):::::::*

Configuration 9 (hide)

AND

cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:cisco:asa_5585-x_firmware:009.014\(001.150\):::::::*
	cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(001.211\):::::::*
	cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(001.220\):::::::*
	cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(015.050\):::::::*

History

16 Aug 2023, 16:17

Type	Values Removed	Values Added
CPE	cpe:2.3:a:cisco:adaptive_security_appliance::::::::	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::

24 Oct 2022, 14:19

Type	Values Removed	Values Added
CWE	~~CWE-400~~	CWE-401

29 Oct 2021, 01:59

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.8 v3 : 7.5
CPE		cpe:2.3:h:cisco:asa_5512-x:-:::::::* cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(001.220\):::::::* cpe:2.3:h:cisco:asa_5525-x:-:::::::* cpe:2.3:o:cisco:asa_5580_firmware:099.017\(015.050\):::::::* cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(001.220\):::::::* cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(001.211\):::::::* cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(015.050\):::::::* cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(015.050\):::::::* cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(015.050\):::::::* cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(015.050\):::::::* cpe:2.3:o:cisco:asa_5580_firmware:099.017\(001.211\):::::::* cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(001.220\):::::::* cpe:2.3:h:cisco:asa_5580:-:::::::* cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(001.211\):::::::* cpe:2.3:h:cisco:asa_5515-x:-:::::::* cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(001.220\):::::::* cpe:2.3:o:cisco:asa_5512-x_firmware:009.014\(001.150\):::::::* cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(015.050\):::::::* cpe:2.3:o:cisco:asa_5585-x_firmware:009.014\(001.150\):::::::* cpe:2.3:o:cisco:asa_5505_firmware:099.017\(001.220\):::::::* cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(001.211\):::::::* cpe:2.3:a:cisco:firepower_threat_defense:::::::: cpe:2.3:h:cisco:asa_5505:-:::::::* cpe:2.3:a:cisco:adaptive_security_appliance:::::::: cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(001.211\):::::::* cpe:2.3:h:cisco:asa_5555-x:-:::::::* cpe:2.3:h:cisco:asa_5545-x:-:::::::* cpe:2.3:o:cisco:asa_5505_firmware:099.017\(015.050\):::::::* cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(001.211\):::::::* cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(015.050\):::::::* cpe:2.3:o:cisco:asa_5580_firmware:099.017\(001.220\):::::::* cpe:2.3:o:cisco:asa_5580_firmware:009.014\(001.150\):::::::* cpe:2.3:o:cisco:asa_5515-x_firmware:009.014\(001.150\):::::::* cpe:2.3:o:cisco:asa_5555-x_firmware:009.014\(001.150\):::::::* cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(001.220\):::::::* cpe:2.3:o:cisco:asa_5525-x_firmware:009.014\(001.150\):::::::* cpe:2.3:o:cisco:asa_5505_firmware:099.017\(001.211\):::::::* cpe:2.3:o:cisco:asa_5545-x_firmware:009.014\(001.150\):::::::* cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(001.220\):::::::* cpe:2.3:h:cisco:asa_5585-x:-:::::::* cpe:2.3:o:cisco:asa_5505_firmware:009.014\(001.150\):::::::* cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(001.211\):::::::*
CWE		CWE-400
References	~~(CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-dos-Unk689XY -~~	(CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-dos-Unk689XY - Vendor Advisory

27 Oct 2021, 20:15

Type	Values Removed	Values Added
Summary	A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) 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 resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.	A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) 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 resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

27 Oct 2021, 19:35

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-10-27 19:15

Updated : 2024-02-04 22:08

NVD link : CVE-2021-34792

Mitre link : CVE-2021-34792

CVE.ORG link : CVE-2021-34792

JSON object : View

Products Affected

cisco

asa_5512-x
asa_5545-x_firmware
asa_5580_firmware
asa_5525-x_firmware
asa_5555-x_firmware
asa_5512-x_firmware
asa_5585-x_firmware
asa_5525-x
asa_5505
asa_5505_firmware
asa_5585-x
asa_5545-x
asa_5555-x
asa_5580
asa_5515-x
asa_5515-x_firmware
adaptive_security_appliance_software
firepower_threat_defense

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

CWE-400

Uncontrolled Resource Consumption

7.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

7.8 /10

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

JSON object

Attach tags to CVE-2021-34792

7.5^/10

7.8^/10

Attach tags to `CVE-2021-34792`