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CVE-2021-1237— Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability

Quick assessment

Affected
Cisco Cisco AnyConnect Secure Mobility 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 AnyConnect Secure Mobility Client for Windows是美国思科（Cisco）公司的一款基于Windows平台的可通过任何设备安全访问网络和应用的安全移动客户端。 Cisco AnyConnect Secure Mobility Client for Windows 存在安全漏洞，该漏洞源于应用程序在运行时加载的资源验证不足。攻击者可利用该漏洞在系统的特定路径中插入配置文件，从而导致加载恶意DLL文件。

CVSS 7.8 · High EPSS 0.40% · P31
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I. Basic Information for CVE-2021-1237

Vulnerability Information
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Vulnerability Title
Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Network Access Manager and Web Security Agent components of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL injection attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path in the system which, in turn, causes a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对搜索路径元素未加控制
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco AnyConnect Secure Mobility Client for Windows 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco AnyConnect Secure Mobility Client for Windows是美国思科（Cisco）公司的一款基于Windows平台的可通过任何设备安全访问网络和应用的安全移动客户端。 Cisco AnyConnect Secure Mobility Client for Windows 存在安全漏洞，该漏洞源于应用程序在运行时加载的资源验证不足。攻击者可利用该漏洞在系统的特定路径中插入配置文件，从而导致加载恶意DLL文件。
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 AnyConnect Secure Mobility Client n/a -

II. Public POCs for CVE-2021-1237

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III. Intelligence Information for CVE-2021-1237

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Vendor Advisories for CVE-2021-1237 (1)

Same Patch Batch · Cisco · 2021-01-13 · 96 CVEs total

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CVE-2021-1185 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1186 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1188 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1217 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1360 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1193 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1194 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1195 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1196 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1192 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1187 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1184 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1183 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1182 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1181 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1180 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1179 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1178 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote
CVE-2021-1177 7.2 HIGH Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote

Showing top 20 of 96 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco AnyConnect Secure Mobility Client
Same vendor: Cisco
Same weakness: CWE-427

V. Comments for CVE-2021-1237

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