Vulnerability identifier: #VU82708

Vulnerability risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-20071

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Firepower Threat Defense (FTD)
Hardware solutions / Security hardware applicances
FirePOWER Services
Client/Desktop applications / Antivirus software/Personal firewalls
Cyber Vision
Client/Desktop applications / Antivirus software/Personal firewalls
Umbrella Secure Internet Gateway
Client/Desktop applications / Antivirus software/Personal firewalls
Open Source Snort 2
Server applications / IDS/IPS systems, Firewalls and proxy servers
Open Source Snort 3
Server applications / IDS/IPS systems, Firewalls and proxy servers
Cisco UTD Snort IPS Engine Software for IOS XE
Other software / Other software solutions
Cisco UTD Engine for IOS XE SD-WAN
Other software / Other software solutions
Meraki MX Security Appliances
Other software / Other software solutions
Cisco 1000 Series Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
4000 Series Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 8000V Edge Software
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 8200 Series Edge Platforms
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 8300 Series Edge Platforms
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 8500L Series Edge Platforms
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cloud Services Routers 1000V Series
Hardware solutions / Routers & switches, VoIP, GSM, etc
Integrated Services Virtual Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX64
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX64W
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX65
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX65W
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX67
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX67C
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX68
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX68WC
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX75
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX84
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX85
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX95
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX100
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX105
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX250
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX400
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX450
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX600
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco Meraki MX67W
Hardware solutions / Firmware
Cisco Meraki MX68W
Hardware solutions / Firmware

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a flaw in the FTP module of the Snort detection engine. A remote attacker can send specially crafted FTP traffic, bypass FTP inspection and deliver a malicious payload.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Firepower Threat Defense (FTD): 6.3.0, 6.4.0, 6.5.0, 6.6.0, 6.7.0, 7.0.0, 7.1.0, 7.2.0, 7.3.0

FirePOWER Services: All versions

Open Source Snort 2: All versions

Cisco UTD Snort IPS Engine Software for IOS XE: 17.3 - 17.12

Cisco UTD Engine for IOS XE SD-WAN: 17.3 - 17.12

Cisco 1000 Series Integrated Services Routers: All versions

4000 Series Integrated Services Routers: All versions

Catalyst 8000V Edge Software: All versions

Catalyst 8200 Series Edge Platforms: All versions

Catalyst 8300 Series Edge Platforms: All versions

Catalyst 8500L Series Edge Platforms: All versions

Cloud Services Routers 1000V Series: All versions

Integrated Services Virtual Router: All versions

Meraki MX Security Appliances: MX15 - MX18

Cisco Meraki MX64: All versions

Cisco Meraki MX64W: All versions

Cisco Meraki MX65: All versions

Cisco Meraki MX65W: All versions

Cisco Meraki MX67: All versions

Cisco Meraki MX67C: All versions

Cisco Meraki MX67W: All versions

Cisco Meraki MX68: All versions

Cisco Meraki MX68W: All versions

Cisco Meraki MX68WC: All versions

Cisco Meraki MX75: All versions

Cisco Meraki MX84: All versions

Cisco Meraki MX85: All versions

Cisco Meraki MX95: All versions

Cisco Meraki MX100: All versions

Cisco Meraki MX105: All versions

Cisco Meraki MX250: All versions

Cisco Meraki MX400: All versions

Cisco Meraki MX450: All versions

Cisco Meraki MX600: All versions

Cyber Vision: 3.2.4 - 4.1

Umbrella Secure Internet Gateway: All versions

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External links
http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-ftd-zXYtnjOM

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.