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CVE-2024-20526

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 Adaptive Security Appliance是美国思科（Cisco）公司的一个网络设备。用于保护各种规模的公司网络和数据中心。 Cisco Adaptive Security Appliance存在安全漏洞，该漏洞源于于建立 SSH 会话时出现逻辑错误。攻击者利用该漏洞导致系统拒绝服务。

CVSS 5.3 · Medium EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-20526

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the SSH server of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition for the SSH server of an affected device. This vulnerability is due to a logic error when an SSH session is established. An attacker could exploit this vulnerability by sending crafted SSH messages to an affected device. A successful exploit could allow the attacker to exhaust available SSH resources on the affected device so that new SSH connections to the device are denied, resulting in a DoS condition. Existing SSH connections to the device would continue to function normally. The device must be rebooted manually to recover. However, user traffic would not be impacted and could be managed using a remote application such as Cisco Adaptive Security Device Manager (ASDM).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Adaptive Security Appliance 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Adaptive Security Appliance是美国思科（Cisco）公司的一个网络设备。用于保护各种规模的公司网络和数据中心。 Cisco Adaptive Security Appliance存在安全漏洞，该漏洞源于于建立 SSH 会话时出现逻辑错误。攻击者利用该漏洞导致系统拒绝服务。
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 9.16.4.67 -

II. Public POCs for CVE-2024-20526

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III. Intelligence Information for CVE-2024-20526

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Vendor Advisories for CVE-2024-20526 (1)

Same Patch Batch · Cisco · 2024-10-23 · 52 CVEs total

CVE-2024-20329 9.9 CRITICAL Cisco Adaptive Security Appliance Software Remote Command Injection Vulnerability
CVE-2024-20424 9.9 CRITICAL Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20412 9.3 CRITICAL Cisco Firepower Threat Defense 安全漏洞
CVE-2024-20495 8.6 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20260 8.6 HIGH Cisco Adaptive Security Virtual Appliance and Secure Firewall Threat Defense Virtual SSL V
CVE-2024-20494 8.6 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20426 8.6 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20339 8.6 HIGH Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vu
CVE-2024-20402 8.6 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20351 8.6 HIGH Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability
CVE-2024-20330 8.6 HIGH Cisco Firepower Threat Defense Software for Cisco Firepower 2100 Series TCP UDP Snort 2 an
CVE-2024-20408 7.7 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20268 7.7 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SNMP Deni
CVE-2024-20275 6.8 MEDIUM Cisco Secure Firewall Management Center Software Backup Cluster Command Injection Vulnerab
CVE-2024-20331 6.8 MEDIUM Cisco Adaptive Security Appliance and Firepower Threat Defense Software VPN Authentication
CVE-2024-20374 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20472 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20473 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20379 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20471 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞

Showing top 20 of 52 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco Adaptive Security Appliance (ASA) Software
Same vendor: Cisco
Same weakness: CWE-400

V. Comments for CVE-2024-20526

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