Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability in the Cisco AnyConnect Secure Mobility Client installer for Windows could allow an authenticated local attacker to place files in system directories with elevated privileges. This is due to how the software handles directory paths. Successful exploitation could enable an attacker to perform actions such as DLL pre-loading or DLL hijacking. The attacker must possess valid credentials on the target Windows system to exploit this flaw.
- Cisco AnyConnect Secure Mobility Client installer
- Incorrect directory path handling
- Unauthorized file placement with system privileges
Attack Path
How an attacker could exploit the issue
An authenticated local attacker can exploit a vulnerability in Cisco AnyConnect's installer component. This allows the attacker to copy user-supplied files to system directories with elevated privileges. The vulnerability arises from improper handling of directory paths, enabling an attacker to place malicious files in arbitrary locations. This could facilitate attacks such as DLL pre-loading or DLL hijacking.
- Requires valid credentials on Windows.
- Attacker copies malicious files.
- Results in system-level control.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow an attacker with valid user credentials on a Windows system to escalate privileges. The attacker could copy malicious files to system directories, potentially leading to DLL pre-loading or hijacking. Exploitation requires the attacker to already have authenticated access to the affected system.
- Likely attacker skill level: Low
- Required access or conditions: Authenticated local access
- Business risk or urgency: Medium
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
A vulnerability in the Cisco AnyConnect Secure Mobility Client for Windows allows a local attacker with valid credentials to copy files to system directories with elevated privileges. This could enable malicious actions such as DLL pre-loading or hijacking. The exploit requires an attacker to have authenticated access to the Windows system to execute.
- Find systems with the affected client.
- Isolate affected systems or reduce access.
- Apply vendor updates and verify.
- Monitor for suspicious activity.
