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Cisco Firepower Threat Defense Software SMB Protocol Snort 3 Detection Engine Bypass and Denial of Service Vulnerability

cisco-sa-ftd-smbsnort3-dos-pfOjOYUV · Medium · Published · Updated

A vulnerability in the interaction between the Server Message Block (SMB) protocol preprocessor and the Snort 3 detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error-checking when the Snort 3 detection engine is processing SMB traffic. An attacker could exploit this vulnerability by sending a crafted SMB packet stream through an affected device. A successful exploit could allow the attacker to cause the Snort process to reload, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-smbsnort3-dos-pfOjOYUV This advisory is part of the November 2023 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see Cisco Event Response: November 2023 Semiannual Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication.

Cisco advisory ·CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2023-20270
Cisco Bug IDsCSCwe19286
CVSS ScoreBase 5.8
Base 5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:X/RL:X/RC:X
Product Names From Source
Cisco Firepower Threat Defense Software 7.1.0, Cisco Firepower Threat Defense Software 7.1.0.1, Cisco Firepower Threat Defense Software 7.1.0.2, Cisco Firepower Threat Defense Software 7.1.0.3, Cisco Firepower Threat Defense Software 7.2.0, Cisco Firepower Threat Defense Software 7.2.0.1, Cisco Firepower Threat Defense Software 7.2.1, Cisco Firepower Threat Defense Software 7.2.2, Cisco Firepower Threat Defense Software 7.2.3, Cisco Firepower Threat Defense Software 7.3.0, Cisco Firepower Threat Defense Software 7.3.1, Cisco Firepower Threat Defense Software 7.3.1.1, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco Firepower 2100 Series, Cisco Firepower 1000 Series, Cisco 3000 Series Industrial Security Appliances (ISA), Cisco Firepower 9000 Series, Cisco Firepower 4100 Series, Cisco Secure Firewall Threat Defense Virtual, Cisco Secure Firewall 3100 Series

Related Products

Product CVE Evidence
Cisco Secure Firewall Threat Defense Virtual CVE-2023-20270 Cisco OpenVuln
Cisco Secure Firewall Threat Defense (FTD) Software CVE-2023-20270 Cisco OpenVuln
Cisco Secure Firewall 3100 Series CVE-2023-20270 Cisco OpenVuln
Cisco Firepower Threat Defense Software CVE-2023-20270 Cisco OpenVuln
Cisco Firepower 9000 Series CVE-2023-20270 Cisco OpenVuln
Cisco Firepower 4100 Series CVE-2023-20270 Cisco OpenVuln
Cisco Firepower 2100 Series CVE-2023-20270 Cisco OpenVuln
Cisco Firepower 1000 Series CVE-2023-20270 Cisco OpenVuln
Cisco 3000 Series Industrial Security Appliances (ISA) CVE-2023-20270 Cisco OpenVuln