Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-40118

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
27/10/2021
Last modified:
07/11/2023

Description

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper input validation when parsing HTTPS requests. An attacker could exploit this vulnerability by sending a malicious HTTPS request to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.10
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* 9.8.4.40 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 6.4.0.13 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 6.5.0 (including) 6.6.5 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 6.7.0 (including) 6.7.0.3 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 7.0.0 (including) 7.0.1 (excluding)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* 9.9.0 (including) 9.12.4.29 (excluding)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* 9.13.0 (including) 9.14.3.9 (excluding)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* 9.15.0 (including) 9.15.1.17 (excluding)
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* 9.16.0 (including) 9.16.2.3 (excluding)
cpe:2.3:o:cisco:asa_5512-x_firmware:009.012\(004.024\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:asa_5512-x_firmware:009.015\(001\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:asa_5512-x_firmware:009.015\(001.015\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:asa_5512-x_firmware:009.015\(001.016\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:asa_5512-x_firmware:009.016\(001\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools