Remote denial of service in Cisco Firepower Threat Defense Software and Cisco FirePOWER Services

1) Resource exhaustion

EUVDB-ID: #VU99288

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 - Resource exhaustion

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:cisco_systems:firepower_services:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:cisco_ftd:*:*:*:*:*:*:*:*

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

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.