high
7.5
CWE
20 399
Advisory Published
Updated

CVE-2018-0385: Input Validation

First published: Mon Jul 16 2018(Updated: )

A vulnerability in the detection engine parsing of Security Socket Layer (SSL) protocol packets for Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the Snort process unexpectedly restarting. The vulnerability is due to improper input handling of the SSL traffic. An attacker could exploit this vulnerability by sending a crafted SSL traffic to the detection engine on the targeted device. An exploit could allow the attacker to cause a DoS condition if the Snort process restarts and traffic inspection is bypassed or traffic is dropped. Cisco Bug IDs: CSCvi36434.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Secure Firewall Management Center=5.4.0
Cisco Secure Firewall Management Center=6.0.0
Cisco Secure Firewall Management Center=6.1.0
Cisco Secure Firewall Management Center=6.2.0
Cisco Secure Firewall Management Center=6.2.2
Cisco Secure Firewall Management Center=6.2.3
Cisco Secure Firewall Management Center=6.3.0
Cisco Firepower Management Center (FMC) and Firepower Threat Defense (FTD) Software=5.4.0
Cisco Firepower Management Center (FMC) and Firepower Threat Defense (FTD) Software=6.0.0
Cisco Firepower Management Center (FMC) and Firepower Threat Defense (FTD) Software=6.1.0
Cisco Firepower Management Center (FMC) and Firepower Threat Defense (FTD) Software=6.2.0
Cisco Firepower Management Center (FMC) and Firepower Threat Defense (FTD) Software=6.2.2
Cisco Firepower Management Center (FMC) and Firepower Threat Defense (FTD) Software=6.2.3
Cisco Firepower Management Center (FMC) and Firepower Threat Defense (FTD) Software=6.3.0

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2018-0385?

    CVE-2018-0385 has been classified with a CVSS score indicating a moderately high severity due to its potential for denial of service.

  • How do I fix CVE-2018-0385?

    To fix CVE-2018-0385, users should update Cisco Firepower System Software to the latest available version as recommended by Cisco's security advisory.

  • What type of attack does CVE-2018-0385 enable?

    CVE-2018-0385 allows an unauthenticated remote attacker to cause a denial of service condition by triggering a restart of the Snort process.

  • Which Cisco products are affected by CVE-2018-0385?

    CVE-2018-0385 affects multiple versions of Cisco Secure Firewall Management Center and Cisco Firepower Management Center Software.

  • Is CVE-2018-0385 remotely exploitable?

    Yes, CVE-2018-0385 is remotely exploitable without authentication, making it a serious concern for affected Cisco systems.

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