CVE-2017-12300

Name: CVE-2017-12300
Creator: NVD / NIST
Published: 2017-11-16T07:29:00.367+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.60%

Last modified Jun 17, 2026

CVE-2017-12300 is a vulnerability of currently unknown severity. A vulnerability in the SNORT detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a file policy that is configured to block the Server Message Block Version 2 (SMB2) protocol. The vulnerability is due to the incorrect detection of an SMB2 file when the detection is based on the length of the file. EPSS estimates a 1.60% chance of exploitation in the next 30 days.

Description

A vulnerability in the SNORT detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a file policy that is configured to block the Server Message Block Version 2 (SMB2) protocol. The vulnerability is due to the incorrect detection of an SMB2 file when the detection is based on the length of the file. An attacker could exploit this vulnerability by sending a crafted SMB2 transfer request through the targeted device. A successful exploit could allow the attacker to bypass filters that are configured to block SMB2 traffic. Cisco Bug IDs: CSCve58398.

Metrics

EPSS Probability

1.60%

72.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Secure Firewall Management Center	2.9.9
Cisco	Secure Firewall Management Center	2.9.10
Cisco	Secure Firewall Management Center	2.9.11
Cisco	Secure Firewall Management Center	2.9.12

References

http://www.securityfocus.com/bid/101862Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-firepower2Vendor Advisory
http://www.securityfocus.com/bid/101862Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-firepower2Vendor Advisory

Timeline

Published: Nov 16, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-12300?

How severe is CVE-2017-12300?

Severity scoring for CVE-2017-12300 is pending analysis. The EPSS model estimates a 1.60% probability of exploitation in the next 30 days.

How do I fix CVE-2017-12300?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-12300?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST