CVE-2021-1493

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Buffer Overflow Denial of Service Vulnerability

Severity Score

7.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to cause a buffer overflow on an affected system. The vulnerability is due to insufficient boundary checks for specific data that is provided to the web services interface of an affected system. An attacker could exploit this vulnerability by sending a malicious HTTP request. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system, which could disclose data fragments or cause the device to reload, resulting in a denial of service (DoS) condition.

Una vulnerabilidad en la interfaz de servicios web del software Cisco Adaptive Security Appliance (ASA) y el software Cisco Firepower Threat Defense (FTD), podría permitir a un atacante remoto autenticado causar un desbordamiento del búfer en un sistema afectado. La vulnerabilidad es debido a comprobaciones de límites insuficientes para datos específicos que se proporcionan a la interfaz de servicios web de un sistema afectado. Un atacante podría explotar esta vulnerabilidad mediante el envío de una petición HTTP maliciosa. Una explotación con éxito podría permitir al atacante causar una condición de desbordamiento de búfer en el sistema afectado, lo que podría revelar fragmentos de datos o hacer que el dispositivo se recargue, resultando en una condición de denegación de servicio (DoS)

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2020-11-13 CVE Reserved
2021-04-29 CVE Published
2023-03-07 EPSS Updated
2024-11-08 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-memc-dos-fncTyYKG	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				< 6.4.0.12 Search vendor "Cisco" for product "Firepower Threat Defense" and version " < 6.4.0.12"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				>= 6.5.0 < 6.6.3 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.5.0 < 6.6.3"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				>= 6.7.0 < 6.7.0.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.7.0 < 6.7.0.1"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.8 < 9.8.4.34 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.8 < 9.8.4.34"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.9 < 9.9.2.85 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.9 < 9.9.2.85"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.10 < 9.12.4.13 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.10 < 9.12.4.13"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.13 < 9.13.1.21 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.13 < 9.13.1.21"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.14 < 9.14.2.8 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.14 < 9.14.2.8"		-		Affected
Cisco Search vendor "Cisco"		Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software"				>= 9.15 < 9.15.1.7 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.15 < 9.15.1.7"		-		Affected