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CVE-2021-34794— Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SNMP Access Control Vulnerability

Quick assessment

Affected
Cisco Cisco Adaptive Security Appliance (ASA) Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Software）存在安全漏洞，该漏洞源于访问控制无效。攻击者可以通过从 SNMPv3 访问控制列表不允许的主机向受影响的设备发送 SNMPv3 查询来利用此漏洞。成功的利用可能允许攻击者向受影响的设备发

CVSS 5.3 · Medium EPSS 0.94% · P59

Possible ATT&CK Techniques 1 AI

T1046 · Network Service Discovery
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I. Basic Information for CVE-2021-34794

Vulnerability Information
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Vulnerability Title
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SNMP Access Control Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Simple Network Management Protocol version 3 (SNMPv3) access control functionality of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to query SNMP data. This vulnerability is due to ineffective access control. An attacker could exploit this vulnerability by sending an SNMPv3 query to an affected device from a host that is not permitted by the SNMPv3 access control list. A successful exploit could allow the attacker to send an SNMP query to an affected device and retrieve information from the device. The attacker would need valid credentials to perform the SNMP query.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Firepower Threat Defense 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Software）存在安全漏洞，该漏洞源于访问控制无效。攻击者可以通过从 SNMPv3 访问控制列表不允许的主机向受影响的设备发送 SNMPv3 查询来利用此漏洞。成功的利用可能允许攻击者向受影响的设备发
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Adaptive Security Appliance (ASA) Software n/a -

II. Public POCs for CVE-2021-34794

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III. Intelligence Information for CVE-2021-34794

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Vendor Advisories for CVE-2021-34794 (1)

Same Patch Batch · Cisco · 2021-10-27 · 20 CVEs total

CVE-2021-40117 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS D
CVE-2021-34781 8.6 HIGH Cisco Firepower Threat Defense Software SSH Connections Denial of Service Vulnerability
CVE-2021-34783 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-
CVE-2021-34792 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Resource
CVE-2021-34793 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Transpare
CVE-2021-40116 8.6 HIGH Multiple Cisco Products Snort Rule Denial of Service Vulnerability
CVE-2021-40118 8.6 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi
CVE-2021-34762 8.1 HIGH Cisco Firepower Management Center Software Authenticated Directory Traversal Vulnerability
CVE-2021-40114 6.8 MEDIUM Multiple Cisco Products Snort Memory Leak Denial of Service Vulnerability
CVE-2021-34756 6.7 MEDIUM Cisco Firepower Threat Defense Software Command Injection Vulnerabilities
CVE-2021-34755 6.7 MEDIUM Cisco Firepower Threat Defense Software Command Injection Vulnerabilities
CVE-2021-34754 5.8 MEDIUM Cisco Firepower Threat Defense Software Ethernet Industrial Protocol Policy Bypass Vulnera
CVE-2021-34787 5.3 MEDIUM Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Identity-
CVE-2021-40125 5.3 MEDIUM Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IKEv2 Sit
CVE-2021-34764 4.8 MEDIUM Cisco Firepower Management Center Software Cross-Site Scripting and Open Redirect Vulnerab
CVE-2021-34763 4.8 MEDIUM Cisco Firepower Management Center Software Cross-Site Scripting and Open Redirect Vulnerab
CVE-2021-34791 4.7 MEDIUM Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Applicati
CVE-2021-34790 4.7 MEDIUM Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Applicati
CVE-2021-34761 4.4 MEDIUM Cisco Firepower Threat Defense Software CLI Arbitrary File Write Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Adaptive Security Appliance (ASA) Software
Same vendor: Cisco
Same weakness: CWE-284

V. Comments for CVE-2021-34794

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