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CVE-2022-20685

HIGH
Published 2024-11-15T15:36:31.261Z
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CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.003
probability
of exploitation in the wild

There is a 0.3% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.505
Higher than 50.5% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco Cyber Vision

Affected Versions:

3.0.0 3.0.2 3.0.3 3.0.1 3.1.0 3.0.4 3.1.1 3.1.2 3.2.0 3.0.5 3.2.1 3.0.6 3.2.2 3.2.3 3.2.4 4.0.0 4.0.1
Cisco

Cisco Firepower Threat Defense Software

Affected Versions:

6.2.3.14 6.4.0.1 6.2.3.7 6.2.3 6.4.0.2 6.2.3.9 6.2.3.1 6.2.3.2 6.4.0.5 6.2.3.10 6.4.0 6.4.0.3 6.2.3.6 6.4.0.4 6.2.3.15 6.2.3.5 6.2.3.4 6.2.3.3 6.2.3.8 6.4.0.6 6.2.3.11 6.2.3.12 6.2.3.13 6.4.0.7 6.4.0.8 6.6.0 6.4.0.9 6.2.3.16 6.6.0.1 6.6.1 6.4.0.10 6.7.0 6.4.0.11 6.6.3 6.7.0.1 6.6.4 6.4.0.12 6.7.0.2 7.0.0 6.2.3.17 7.0.0.1 6.6.5 6.2.3.18 6.7.0.3
Cisco

Cisco UTD SNORT IPS Engine Software

Affected Versions:

3.17.1S 16.12.3 Fuji-16.9.5 16.12.4 17.3.1a 16.6.6 16.12.2 Fuji-16.9.6 3.17.0S Fuji-16.9.3 Denali-16.3.7 Fuji-16.9.2 Fuji-16.9.4 Everest-16.6.4 Everest-16.6.3 16.6.5 Denali-16.3.5 17.2.1r 17.1.1 Everest-16.6.2 16.6.7a Denali-16.3.4 16.6.1 Denali-16.3.9 Denali-16.3.3 16.12.1a 17.3.2 17.4.1a 16.12.5 17.5.1 Fuji-16.9.7 16.6.9 17.3.3 17.5.1a 17.3.4 17.3.4a 17.4.2 17.4.1b 17.6.1a 16.6.10 17.7.1a 16.12.6 Fuji-16.9.8

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-5pj6-3hcq-wv78

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2022-20685
WEB https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sna-xss-NXOxDhRQ
WEB https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-9D3hJLuj

Advisory provided by GitHub Security Advisory Database. Published: November 15, 2024, Modified: November 15, 2024

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-9D3hJLuj
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sna-xss-NXOxDhRQ
Published: 2024-11-15T15:36:31.261Z
Last Modified: 2025-01-27T17:48:32.910Z
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