CVE-2022-20685
HIGHDescription
A vulnerability in the Modbus preprocessor of the Snort detection engine could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an integer overflow while processing Modbus traffic. An attacker could exploit this vulnerability by sending crafted Modbus traffic through an affected device. A successful exploit could allow the attacker to cause the Snort process to hang, causing traffic inspection to stop.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
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CVSS v3.1 Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Type (CWE)
CWE-190
Integer Overflow
Affected Products
| Vendor | Product |
|---|---|
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | cyber_vision |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | firepower_threat_defense |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
| cisco | unified_threat_defense_snort_intrusion_prevention_system_engine |
References
Frequently Asked Questions
What is CVE-2022-20685? +
A vulnerability in the Modbus preprocessor of the Snort detection engine could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to an integer overflow while processing Modbus traffic. An attacker could exploit this vulnerability by sending crafted Modbus traffic through an affected device. A successful exploit could allow the attacker to cause the Snort process to hang, causing traffic inspection to stop.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2022-20685? +
CVE-2022-20685 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2022-20685? +
CVE-2022-20685 affects products from cisco, specifically: cyber_vision, firepower_threat_defense, unified_threat_defense_snort_intrusion_prevention_system_engine. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2022-20685? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.
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