Vulnerability identifier: #VU57800
Vulnerability risk: High
CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-241
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Cisco Firepower Threat Defense (FTD)
Hardware solutions /
Security hardware applicances
Snort
Server applications /
IDS/IPS systems, Firewalls and proxy servers
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper handling of the Block with Reset or Interactive Block with Reset actions if a rule is configured without proper constraints. A remote attacker can send a specially crafted IP packet and perform a denial of service (DoS) attack.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Cisco Firepower Threat Defense (FTD): 7.0.0
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-RywH7ezM
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.