Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-1402

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
29/04/2021
Last modified:
05/08/2022

Description

A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message through an affected device. SSL/TLS messages sent to an affected device do not trigger this vulnerability. A successful exploit could allow the attacker to cause a process to crash. This crash would then trigger a reload of the device. No manual intervention is needed to recover the device after the reload.

Impact

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

Base Score: 8.60 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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

Base Score 3.x
8.60
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

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

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 6.3.0 (including) 6.4.0 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 6.5.0 (including) 6.6.0 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense_virtual:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_1010:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_1120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_1140:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_1150:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_2110:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_2120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_2130:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools