Resource management error in Cisco Firepower Threat Defense Software

1) Resource management error

EUVDB-ID: #VU99331

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-2024-20407

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass configured policies.

The vulnerability exists due to a logic error in the interaction between the TCP Intercept feature and the Snort 3 detection engine. A remote attacker can cause unintended traffic to enter the network protected by the affected device.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Firepower Threat Defense (FTD): 6.2.3 - 9.20.2.10

CPE2.3

• cpe:2.3:h:cisco_systems:cisco_ftd:6.2.3.18:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:6.4.0.18:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:6.6.7.2:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:6.7.0.3:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:7.0.6.2:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:7.1.0.3:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:7.2.8.1:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:7.3.1.2:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:7.4.1.1:*:*:*:*:*:*:
• cpe:2.3:h:cisco_systems:cisco_ftd:9.8.1.7:*:*:*:*:*:*:

External links

http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-bypass-PTry37fX

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.