Vulnerability Intelligence Report
Multiple Cisco Products Snort Modbus Denial of Service Vulnerability
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.
No Active Exploit Signals
CVSS Base Score
7.5
HIGH
Exploitability:3.9
Impact Score:3.6
EPSS Probability:1.39%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-190 ↗Integer Overflow or Wraparound
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Cisco | Cisco Cyber Vision | 3.0.0 (affected), 3.0.2 (affected), 3.0.3 (affected), 3.0.1 (affected), 3.1.0 (affected), 3.0.4 (affected), 3.1.1 (affected), 3.1.2 (affected), 3.2.0 (affected), 3.0.5 (affected), 3.2.1 (affected), 3.0.6 (affected), 3.2.2 (affected), 3.2.3 (affected), 3.2.4 (affected), 4.0.0 (affected), 4.0.1 (affected) |
| Cisco | Cisco Firepower Threat Defense Software | 6.2.3.14 (affected), 6.4.0.1 (affected), 6.2.3.7 (affected), 6.2.3 (affected), 6.4.0.2 (affected), 6.2.3.9 (affected), 6.2.3.1 (affected), 6.2.3.2 (affected), 6.4.0.5 (affected), 6.2.3.10 (affected), 6.4.0 (affected), 6.4.0.3 (affected), 6.2.3.6 (affected), 6.4.0.4 (affected), 6.2.3.15 (affected), 6.2.3.5 (affected), 6.2.3.4 (affected), 6.2.3.3 (affected), 6.2.3.8 (affected), 6.4.0.6 (affected), 6.2.3.11 (affected), 6.2.3.12 (affected), 6.2.3.13 (affected), 6.4.0.7 (affected), 6.4.0.8 (affected), 6.6.0 (affected), 6.4.0.9 (affected), 6.2.3.16 (affected), 6.6.0.1 (affected), 6.6.1 (affected), 6.4.0.10 (affected), 6.7.0 (affected), 6.4.0.11 (affected), 6.6.3 (affected), 6.7.0.1 (affected), 6.6.4 (affected), 6.4.0.12 (affected), 6.7.0.2 (affected), 7.0.0 (affected), 6.2.3.17 (affected), 7.0.0.1 (affected), 6.6.5 (affected), 6.2.3.18 (affected), 6.7.0.3 (affected) |
| Cisco | Cisco UTD SNORT IPS Engine Software | 3.17.1S (affected), 16.12.3 (affected), Fuji-16.9.5 (affected), 16.12.4 (affected), 17.3.1a (affected), 16.6.6 (affected), 16.12.2 (affected), Fuji-16.9.6 (affected), 3.17.0S (affected), Fuji-16.9.3 (affected), Denali-16.3.7 (affected), Fuji-16.9.2 (affected), Fuji-16.9.4 (affected), Everest-16.6.4 (affected), Everest-16.6.3 (affected), 16.6.5 (affected), Denali-16.3.5 (affected), 17.2.1r (affected), 17.1.1 (affected), Everest-16.6.2 (affected), 16.6.7a (affected), Denali-16.3.4 (affected), 16.6.1 (affected), Denali-16.3.9 (affected), Denali-16.3.3 (affected), 16.12.1a (affected), 17.3.2 (affected), 17.4.1a (affected), 16.12.5 (affected), 17.5.1 (affected), Fuji-16.9.7 (affected), 16.6.9 (affected), 17.3.3 (affected), 17.5.1a (affected), 17.3.4 (affected), 17.3.4a (affected), 17.4.2 (affected), 17.4.1b (affected), 17.6.1a (affected), 16.6.10 (affected), 17.7.1a (affected), 16.12.6 (affected), Fuji-16.9.8 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.386%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Cisco Systems, Inc. · Hosted Service · USA |
| Reserved | 2021-11-02T13:28:29 |
| Published | 2024-11-15T15:36:31 |
| Last Updated | 2025-01-27T17:48:32 |
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