Medium · published September 6, 2023
CVSS calls it medium at 5.0. It is confirmed in active exploitation. It sits in the 97.9th percentile for exploit probability.
⚠️ Watch out! A sneaky flaw in Cisco’s remote access VPN could let attackers try their luck at guessing passwords without breaking a sweat! Imagine a front desk at a hotel that’s poorly designed — when someone tries to check in, they can guess the room number without ever needing a keycard. Similarly, this vulnerability allows attackers to perform brute force attempts on user credentials without proper safeguards. An unauthenticated attacker could exploit this vulnerability to uncover valid username and password combinations, paving the way for unauthorized access to your VPN. In the worst-case scenario, a successful attack could lead to an unauthorized remote access session, potentially exposing sensitive data.
Imagine a front desk at a hotel that’s poorly designed — when someone tries to check in, they can guess the room number without ever needing a keycard. Similarly, this vulnerability allows attackers to perform brute force attempts on user credentials without proper safeguards. This vulnerability arises from improper separation of authentication, authorization, and accounting (AAA) in the Cisco ASA and FTD VPN features, enabling brute force attacks against user credentials while using default connection profiles.
An unauthenticated attacker could exploit this vulnerability to uncover valid username and password combinations, paving the way for unauthorized access to your VPN. In the worst-case scenario, a successful attack could lead to an unauthorized remote access session, potentially exposing sensitive data. To protect your network, update to the latest Cisco ASA and FTD software versions as soon as available. In the meantime, consider implementing account lockout policies or stronger authentication mechanisms to mitigate brute force attempts. You've got this! With the right updates and measures, you can secure your VPN and keep those pesky attackers at bay! 🛡️
| Product | Versions | Fixed in |
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| cisco/adaptive_security_appliance_software | all versions | — |
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