#VU99288 Resource exhaustion in FirePOWER Services and Cisco Firepower Threat Defense (FTD) - CVE-2024-20351

Vulnerability identifier: #VU99288

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-20351

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FirePOWER Services
Client/Desktop applications / Antivirus software/Personal firewalls
Cisco Firepower Threat Defense (FTD)
Hardware solutions / Security hardware applicances

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in the TCP/IP traffic handling function of the Snort Detection Engine. A remote attacker can send a large amount of TCP/IP network traffic through the affected device, trigger resource exhaustion and perform a denial of service (DoS) attack.

Note, this vulnerability affects Cisco products if they are running a vulnerable release of Cisco FTD Software or Cisco FirePOWER Services and have either Snort 2 or Snort 3 enabled.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

Vulnerable software versions

FirePOWER Services: All versions

Cisco Firepower Threat Defense (FTD): before 7.0.6.2, 7.2.6, 7.4.1, 7.6.0, 7.0.6.2, 7.0.6.2, 7.0.6.2, 7.0.6.2

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-ftd-snort-fw-BCJTZPMu
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwh41094
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwh14067

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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.