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CVE Record

CVE-2018-0230: A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (FTD) Sof...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

This vulnerability can let a remote unauthenticated attacker disrupt an affected Cisco Firepower 2100 security appliance. Malicious fragmented IPv4 or IPv6 traffic can make Snort processes hang at full CPU, potentially stopping traffic inspection or forwarding until the device is manually reloaded. Exposure is limited to Cisco Firepower 2100 Series appliances running FTD Software releases 6.2.1 or 6.2.2. Devices receiving untrusted fragmented IPv4 or IPv6 traffic are the relevant concern. Treat this as high priority where affected appliances protect critical network paths. The main business risk is loss of traffic processing on a security gateway, potentially requiring manual recovery and causing outage impact. Mitigation focus: Inventory Firepower 2100 appliances and identify FTD Software versions.; Check Cisco advisory cisco-sa-20180418-fp2100 for vendor-supported fixes or workarounds.; Prioritize remediation for internet-facing or high-throughput inspection points..

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CVE-2018-0230 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
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2Source links

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Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aCisco Firepower 2100 Series Security AppliancesCisco Firepower 2100 Series Security AppliancesListed
Weakness

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Uncontrolled Resource Consumption

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