Vulnerability identifier: #VU57799
Vulnerability risk: Medium
CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-401
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Snort
Server applications /
IDS/IPS systems, Firewalls and proxy servers
Cisco Firepower Threat Defense (FTD)
Hardware solutions /
Security hardware applicances
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
Vendor:
Sourcefire
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak while the Snort detection engine is processing ICMP packets. A remote attacker can send a specially crafted ICMP packet, force the application to leak memory and perform denial of service attack.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Snort: 2.1.0 - 2.9.17.1
Cisco Firepower Threat Defense (FTD): 6.2.2, 6.2.3, 6.3.0, 6.4.0, 6.5.0, 6.6.0, 6.7.0
Cisco UTD Snort IPS Engine Software for IOS XE: 16.12 - 17.4
Cisco UTD Engine for IOS XE SD-WAN: 16.12 - 17.4
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-s2R7W9UU
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.