CVE-2021-34787
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Identity-Based Rule Bypass Vulnerability
Severity Score
5.3
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A vulnerability in the identity-based firewall (IDFW) rule processing feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass security protections. This vulnerability is due to improper handling of network requests by affected devices configured to use object group search. An attacker could exploit this vulnerability by sending a specially crafted network request to an affected device. A successful exploit could allow the attacker to bypass access control list (ACL) rules on the device, bypass security protections, and send network traffic to unauthorized hosts.
Una vulnerabilidad en la funcionalidad de procesamiento de reglas del firewall basado en la identidad (IDFW) del software Cisco Adaptive Security Appliance (ASA) y del software Cisco Firepower Threat Defense (FTD) podría permitir a un atacante remoto no autenticado omitir las protecciones de seguridad. Esta vulnerabilidad es debido al manejo inapropiado de las peticiones de red por parte de los dispositivos afectados configurados para usar la búsqueda de grupos de objetos. Un atacante podría aprovechar esta vulnerabilidad mediante el envío de una petición de red especialmente diseñada a un dispositivo afectado. Una explotación con éxito podría permitir al atacante omitir las reglas de la lista de control de acceso (ACL) en el dispositivo, omitir las protecciones de seguridad y enviar tráfico de red a hosts no autorizados
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-06-15 CVE Reserved
- 2021-10-27 CVE Published
- 2024-07-12 EPSS Updated
- 2024-09-16 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-183: Permissive List of Allowed Inputs
- CWE-755: Improper Handling of Exceptional Conditions
CAPEC
References (1)
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Cisco Search vendor "Cisco" | Asa 5512-x Firmware Search vendor "Cisco" for product "Asa 5512-x Firmware" | 009.009 Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "009.009" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5512-x Search vendor "Cisco" for product "Asa 5512-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5512-x Firmware Search vendor "Cisco" for product "Asa 5512-x Firmware" | 009.012 Search vendor "Cisco" for product "Asa 5512-x Firmware" and version "009.012" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5512-x Search vendor "Cisco" for product "Asa 5512-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5505 Firmware Search vendor "Cisco" for product "Asa 5505 Firmware" | 009.009 Search vendor "Cisco" for product "Asa 5505 Firmware" and version "009.009" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5505 Search vendor "Cisco" for product "Asa 5505" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5505 Firmware Search vendor "Cisco" for product "Asa 5505 Firmware" | 009.012 Search vendor "Cisco" for product "Asa 5505 Firmware" and version "009.012" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5505 Search vendor "Cisco" for product "Asa 5505" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5515-x Firmware Search vendor "Cisco" for product "Asa 5515-x Firmware" | 009.009 Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "009.009" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5515-x Search vendor "Cisco" for product "Asa 5515-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5515-x Firmware Search vendor "Cisco" for product "Asa 5515-x Firmware" | 009.012 Search vendor "Cisco" for product "Asa 5515-x Firmware" and version "009.012" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5515-x Search vendor "Cisco" for product "Asa 5515-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5525-x Firmware Search vendor "Cisco" for product "Asa 5525-x Firmware" | 009.009 Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "009.009" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5525-x Search vendor "Cisco" for product "Asa 5525-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5525-x Firmware Search vendor "Cisco" for product "Asa 5525-x Firmware" | 009.012 Search vendor "Cisco" for product "Asa 5525-x Firmware" and version "009.012" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5525-x Search vendor "Cisco" for product "Asa 5525-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5545-x Firmware Search vendor "Cisco" for product "Asa 5545-x Firmware" | 009.009 Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "009.009" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5545-x Search vendor "Cisco" for product "Asa 5545-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5545-x Firmware Search vendor "Cisco" for product "Asa 5545-x Firmware" | 009.012 Search vendor "Cisco" for product "Asa 5545-x Firmware" and version "009.012" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5545-x Search vendor "Cisco" for product "Asa 5545-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5555-x Firmware Search vendor "Cisco" for product "Asa 5555-x Firmware" | 009.009 Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "009.009" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5555-x Search vendor "Cisco" for product "Asa 5555-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5555-x Firmware Search vendor "Cisco" for product "Asa 5555-x Firmware" | 009.012 Search vendor "Cisco" for product "Asa 5555-x Firmware" and version "009.012" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5555-x Search vendor "Cisco" for product "Asa 5555-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5580 Firmware Search vendor "Cisco" for product "Asa 5580 Firmware" | 009.009 Search vendor "Cisco" for product "Asa 5580 Firmware" and version "009.009" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5580 Search vendor "Cisco" for product "Asa 5580" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5580 Firmware Search vendor "Cisco" for product "Asa 5580 Firmware" | 009.012 Search vendor "Cisco" for product "Asa 5580 Firmware" and version "009.012" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5580 Search vendor "Cisco" for product "Asa 5580" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5585-x Firmware Search vendor "Cisco" for product "Asa 5585-x Firmware" | 009.009 Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "009.009" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5585-x Search vendor "Cisco" for product "Asa 5585-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Asa 5585-x Firmware Search vendor "Cisco" for product "Asa 5585-x Firmware" | 009.012 Search vendor "Cisco" for product "Asa 5585-x Firmware" and version "009.012" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asa 5585-x Search vendor "Cisco" for product "Asa 5585-x" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Search vendor "Cisco" for product "Adaptive Security Appliance" | < 9.8.4.40 Search vendor "Cisco" for product "Adaptive Security Appliance" and version " < 9.8.4.40" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense" | < 6.4.0.13 Search vendor "Cisco" for product "Firepower Threat Defense" and version " < 6.4.0.13" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense" | >= 6.5.0 < 6.6.5 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.5.0 < 6.6.5" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense" | >= 6.7.0 < 6.7.0.3 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 6.7.0 < 6.7.0.3" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense" | >= 7.0.0 < 7.0.1 Search vendor "Cisco" for product "Firepower Threat Defense" and version " >= 7.0.0 < 7.0.1" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.9.0 < 9.12.4.25 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.9.0 < 9.12.4.25" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.13.0 < 9.14.3.1 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.13.0 < 9.14.3.1" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.15.0 < 9.15.1.17 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.15.0 < 9.15.1.17" | - |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Adaptive Security Appliance Software Search vendor "Cisco" for product "Adaptive Security Appliance Software" | >= 9.16.0 < 9.16.1.28 Search vendor "Cisco" for product "Adaptive Security Appliance Software" and version " >= 9.16.0 < 9.16.1.28" | - |
Affected
| ||||||