Critical · published May 6, 2020
CVSS calls it critical at 9.1. It sits in the 99.9th percentile for exploit probability.
🚨 An attacker could exploit this with a simple crafted HTTP request! The lack of input validation in Cisco's ASA and FTD software exposes a dangerous directory traversal vulnerability. 🔥 Think of it as a hotel manager who never checks the guest list — anyone could waltz into the back office, peek at sensitive documents, or even remove valuable files without a second thought! This vulnerability could allow an unauthenticated attacker to read or even delete sensitive files on your network, potentially exposing critical information or causing data loss. While the files are restored upon device reboot, the disruption and potential data exposure during the attack can be absolutely devastating!
Think of it as a hotel manager who never checks the guest list — anyone could waltz into the back office, peek at sensitive documents, or even remove valuable files without a second thought! The vulnerability occurs due to improper validation of HTTP URLs, enabling directory traversal attacks that allow viewing or deleting files within the web services file system when WebVPN or AnyConnect features are enabled.
This vulnerability could allow an unauthenticated attacker to read or even delete sensitive files on your network, potentially exposing critical information or causing data loss. While the files are restored upon device reboot, the disruption and potential data exposure during the attack can be absolutely devastating! To protect your systems, immediately update your Cisco ASA or FTD software to the latest version where this issue is patched. Additionally, review your configurations to limit access to the web services file system and implement stringent input validation measures. You're on the right track! Follow these steps, and you'll fortify your defenses in no time. 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| cisco/secure_firewall_threat_defense | ≥ 6.2.3, < 6.2.3.16 | 6.2.3.16 |
| cisco/secure_firewall_threat_defense | ≥ 6.3.0, < 6.3.0.6 | 6.3.0.6 |
| cisco/secure_firewall_threat_defense | ≥ 6.4.0, < 6.4.0.8 | 6.4.0.8 |
| cisco/secure_firewall_threat_defense | ≥ 6.5.0, < 6.5.0.4 | 6.5.0.4 |
| cisco/asa_5505_firmware | all versions | — |
| cisco/asa_5510_firmware | all versions | — |
| cisco/asa_5512-x_firmware | all versions | — |
| cisco/asa_5515-x_firmware | all versions | — |
| cisco/asa_5520_firmware | all versions | — |
| cisco/asa_5525-x_firmware | all versions | — |
| cisco/asa_5540_firmware | all versions | — |
| cisco/asa_5545-x_firmware | all versions | — |
| cisco/asa_5550_firmware | all versions | — |
| cisco/asa_5555-x_firmware | all versions | — |
| cisco/asa_5580_firmware | all versions | — |
| cisco/asa_5585-x_firmware | all versions | — |
| cisco/adaptive_security_appliance_software | ≥ 9.6, < 9.6.4.40 | 9.6.4.40 |
| cisco/adaptive_security_appliance_software | ≥ 9.8, < 9.8.4.15 | 9.8.4.15 |
| cisco/adaptive_security_appliance_software | ≥ 9.9, < 9.9.2.66 | 9.9.2.66 |
| cisco/adaptive_security_appliance_software | ≥ 9.10, < 9.10.1.37 | 9.10.1.37 |
| cisco/adaptive_security_appliance_software | ≥ 9.12, < 9.12.3.2 | 9.12.3.2 |
| cisco/adaptive_security_appliance_software | ≥ 9.13, < 9.13.1.7 | 9.13.1.7 |