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CVE-2023-20241

Quick assessment

Affected
Cisco Cisco Secure Client
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 Secure Client是美国思科（Cisco）公司的一个用于连接虚拟专用网络的软件。 Cisco Secure Client 存在安全漏洞，该漏洞源于攻击者可以通过在另一个用户访问同一系统上的Cisco Secure Client的同时登录到受影响的设备，然后将精心设计的数据包发送到该本地主机上的端口来利用这些漏洞，攻击者利用该漏洞可能导致 VPN 代理服务崩溃，从而导致系统的所有用户都无法使用该服务。

CVSS 5.5 · Medium EPSS 0.20% · P10
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I. Basic Information for CVE-2023-20241

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple vulnerabilities in Cisco Secure Client Software, formerly AnyConnect Secure Mobility Client, could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected system. These vulnerabilities are due to an out-of-bounds memory read from Cisco Secure Client Software. An attacker could exploit these vulnerabilities by logging in to an affected device at the same time that another user is accessing Cisco Secure Client on the same system, and then sending crafted packets to a port on that local host. A successful exploit could allow the attacker to crash the VPN Agent service, causing it to be unavailable to all users of the system. To exploit these vulnerabilities, the attacker must have valid credentials on a multi-user system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Secure Client 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Secure Client是美国思科（Cisco）公司的一个用于连接虚拟专用网络的软件。 Cisco Secure Client 存在安全漏洞，该漏洞源于攻击者可以通过在另一个用户访问同一系统上的Cisco Secure Client的同时登录到受影响的设备，然后将精心设计的数据包发送到该本地主机上的端口来利用这些漏洞，攻击者利用该漏洞可能导致 VPN 代理服务崩溃，从而导致系统的所有用户都无法使用该服务。
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 Secure Client 4.9.00086 -

II. Public POCs for CVE-2023-20241

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III. Intelligence Information for CVE-2023-20241

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Vendor Advisories for CVE-2023-20241 (1)

Same Patch Batch · Cisco · 2023-11-22 · 3 CVEs total

CVE-2023-20240 5.5 MEDIUM Cisco Anyconnect Secure Mobility Client 安全漏洞
CVE-2023-20084 5.0 MEDIUM Cisco Secure Endpoint 安全漏洞

IV. Related Vulnerabilities

Same product: Cisco Secure Client
Same vendor: Cisco
Same weakness: CWE-125

V. Comments for CVE-2023-20241

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