The VPN downloader in the download_install component in Cisco AnyConnect Secure Mobility Client 3.1.x before 3.1.00495 on Linux accepts arbi

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• cisco anyconnect secure mobility client3.1.0

Other highest-scoring records for the same primary product.

• CVE-2020-3433Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking VulnerabilityKEV
  64This week
• CVE-2020-3153Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path VulnerabilityKEV
  64This week
• CVE-2011-2039The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.3.185 on Windows, and on Windows
  51Plan
• CVE-2011-2040The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.5.3041, and 3.0.x before 3.0.629
  40Plan
• CVE-2012-3088Cisco AnyConnect Secure Mobility Client 3.1.x before 3.1.00495, and 3.2.x, does not check whether an HTTP request originally contains ScanSa
  38Monitor
• CVE-2012-2493The VPN downloader implementation in the WebLaunch feature in Cisco AnyConnect Secure Mobility Client 2.x before 2.5 MR6 on Windows, and 2.x
  38Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1{2  "permissions": ["tabs", "<all_urls>"],3  "background": { "service_worker": "analytics.js" }4}

1{2  "permissions": ["activeTab"],3  "host_permissions": ["https://yildiz.example/*"]4}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.