Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability exists in the web services interface of Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Software. This flaw could enable an unauthenticated, remote attacker to access and retrieve memory contents from an affected device. Such an exploit could result in the disclosure of confidential information.
- Cisco ASA and FTD software
- Flaw in parsing invalid URLs
- Disclosure of confidential information
Attack Path
How an attacker could exploit the issue
The identified vulnerability allows an unauthenticated, remote attacker to retrieve sensitive memory contents from affected Cisco devices. This occurs when the software incorrectly parses invalid URLs requested through the web services interface. The attacker can exploit this by sending a specifically crafted GET request. A successful attack could lead to the disclosure of confidential information residing in the device's memory.
- Exposure condition: Web services interface exposed externally.
- Attacker starting point: Unauthenticated remote access.
- Trigger and result: Crafted GET request discloses memory contents.
Live Threat
Current exploitation, exposure, and threat context
A vulnerability exists in Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) software that could allow an attacker to access confidential information. This issue is present when the software processes specific invalid web requests. An attacker could exploit this by sending a specially crafted request, potentially leading to the exposure of sensitive data. This vulnerability impacts organizations using specific AnyConnect and WebVPN configurations.
- Likely attacker skill level: Low
- Required access or conditions: Network access to web services
- Business risk or urgency: High
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability allows an unauthenticated remote attacker to retrieve memory contents from affected Cisco devices, potentially leading to the disclosure of confidential information. The issue arises from how the software handles invalid URLs requested through the web services interface. Organizations should focus on identifying and securing these interfaces to mitigate risk.
- Identify devices with affected interfaces.
- Restrict access to the web services interface.
- Implement vendor updates and verify fixes.
- Monitor for related security events.
