Multiple Vulnerabilities in Cisco's Snort Detection Engine Affecting SMB2 Traffic
CVE-2022-20922

5.8MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco Firepower Threat Defense Software
Cisco Umbrella Insights Virtual Appliance
Cisco Cyber Vision
Vendor
CVE Published:
15 November 2022

Badges

đź‘ľ Exploit Exists

What is CVE-2022-20922?

Multiple vulnerabilities within the Server Message Block Version 2 (SMB2) processing capabilities of Cisco's Snort detection engine could be exploited by an unauthenticated remote attacker. By sending a high volume of specific SMB2 packets, attackers can disrupt the service by forcing the Snort process to reload, leading to a denial of service (DoS) condition. Furthermore, if the Snort preserve-connection option is enabled—default for Snort 3—attackers may also bypass existing security policies, allowing malicious payloads to infiltrate the protected network.

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Affected Version(s)

Cisco Cyber Vision 3.0.4

Cisco Cyber Vision 3.0.0

Cisco Cyber Vision 3.0.1

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
5.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • đź‘ľ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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