SB2017060808 - Denial of service in Cisco Nexus 7000 Series Switches
Published: June 8, 2017
Security Bulletin ID
SB2017060808
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Denial of service (CVE-ID: CVE-2017-6655)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows an adjacent unauthenticated attacker to cause DoS condition on the target system.
The weakness exists in the Fibre Channel over Ethernet (FCoE) protocol implementation for Cisco NX-OS System Software due to a lack of proper FCoE frame padding validation. A remote attacker can send a stream of specially crafted FCoE frames to a target device and cause FCoE-related process to reload.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.