Resource exhaustion in Cisco Adaptive Security Appliance Software
CVE-2018-0230
A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Security Appliances could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to the affected software improperly validating IP Version 4 (IPv4) and IP Version 6 (IPv6) packets after the software reassembles the packets (following IP Fragmentation). An attacker could exploit this vulnerability by sending a series of malicious, fragmented IPv4 or IPv6 packets to an affected device. A successful exploit could allow the attacker to cause Snort processes on the affected device to hang at 100% CPU utilization, which could cause the device to stop processing traffic and result in a DoS condition until the device is reloaded manually. This vulnerability affects Cisco Firepower Threat Defense (FTD) Software Releases 6.2.1 and 6.2.2, if the software is running on a Cisco Firepower 2100 Series Security Appliance. Cisco Bug IDs: CSCvf91098.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.024 (83.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: -0.000
Affected products
- Cisco Adaptive Security Appliance Software — versions 9.8\(2\), 9.8(2)
- Cisco Firepower Threat Defense — versions 6.2.1, 6.2.2
- Cisco Secure Firewall Threat Defense — versions 6.2.1, 6.2.2
- Cisco Firepower 2100 Series Security Appliances — versions Cisco Firepower 2100 Series Security Appliances
Weakness classification (CWE)
References
- www.securityfocus.com/bid/103931 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418… (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-0230?
- CVE-2018-0230 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Uncontrolled Resource Consumption. CVSS score: 8.6/10. Published 2018-04-19.
- How severe is CVE-2018-0230?
- High severity. CVSS v3 base score is 8.6 out of 10.