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CVE-2023-20269— Cisco ASA和FTD 安全漏洞

一分钟漏洞结论

影响对象
Cisco Cisco Adaptive Security Appliance (ASA) Software
利用判断
已确认在野利用，应立即处置
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

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 Adaptive Security Appliance Software和Firepower Threat Defense Software存在安全漏洞，该漏洞源于远程访问VPN功能与HTTPS管理和站点到站点VPN功能之间的身份验证、授权和计费分离不当，可能允许未经身份验证的远程攻击者进行暴力攻击，试图识别有效的用户名和密码组合。

CVSS 5.0 · Medium KEV · 勒索软件 EPSS 25.45% · P98

影响版本矩阵 246

厂商产品 版本范围状态
Cisco Cisco Adaptive Security Appliance (ASA) Software 9.8.1 affected
9.8.1.5 affected
9.8.1.7 affected
9.8.2 affected
9.8.2.8 affected
9.8.2.14 affected
9.8.2.15 affected
9.8.2.17 affected
… +162 条更多
Cisco Cisco Firepower Threat Defense Software 6.2.3 affected
6.2.3.1 affected
6.2.3.2 affected
6.2.3.3 affected
6.2.3.4 affected
6.2.3.5 affected
6.2.3.6 affected
6.2.3.7 affected
… +68 条更多
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一、 漏洞 CVE-2023-20269 基础信息

漏洞信息
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Vulnerability Title
N/A
来源: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the remote access VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a brute force attack in an attempt to identify valid username and password combinations or an authenticated, remote attacker to establish a clientless SSL VPN session with an unauthorized user. This vulnerability is due to improper separation of authentication, authorization, and accounting (AAA) between the remote access VPN feature and the HTTPS management and site-to-site VPN features. An attacker could exploit this vulnerability by specifying a default connection profile/tunnel group while conducting a brute force attack or while establishing a clientless SSL VPN session using valid credentials. A successful exploit could allow the attacker to achieve one or both of the following: Identify valid credentials that could then be used to establish an unauthorized remote access VPN session. Establish a clientless SSL VPN session (only when running Cisco ASA Software Release 9.16 or earlier). Notes: Establishing a client-based remote access VPN tunnel is not possible as these default connection profiles/tunnel groups do not and cannot have an IP address pool configured. This vulnerability does not allow an attacker to bypass authentication. To successfully establish a remote access VPN session, valid credentials are required, including a valid second factor if multi-factor authentication (MFA) is configured. Cisco will release software updates that address this vulnerability. There are workarounds that address this vulnerability.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
来源: CVE Program / CVE List V5
Vulnerability Title
Cisco ASA和FTD 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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 Adaptive Security Appliance Software和Firepower Threat Defense Software存在安全漏洞，该漏洞源于远程访问VPN功能与HTTPS管理和站点到站点VPN功能之间的身份验证、授权和计费分离不当，可能允许未经身份验证的远程攻击者进行暴力攻击，试图识别有效的用户名和密码组合。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

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受影响产品

厂商 产品 影响版本 CPE 订阅
Cisco Cisco Adaptive Security Appliance (ASA) Software 9.8.1 -
Cisco Cisco Firepower Threat Defense Software 6.2.3 -

二、漏洞 CVE-2023-20269 的公开POC

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三、漏洞 CVE-2023-20269 的情报信息

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同批安全公告 · Cisco · 2023-09-06 · 共 5 条

CVE-2023-20238 10.0 CRITICAL Cisco BroadWorks Application 安全漏洞
CVE-2023-20243 8.6 HIGH Cisco Identity Services Engine 安全漏洞
CVE-2023-20250 6.5 MEDIUM Cisco Small Business 缓冲区错误漏洞
CVE-2023-20263 4.7 MEDIUM Cisco HyperFlex HX Data Platform 输入验证错误漏洞

IV. Related Vulnerabilities

Same product: Cisco Adaptive Security Appliance (ASA) Software
Same vendor: Cisco
Same weakness: CWE-288

V. Comments for CVE-2023-20269

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