Buffer overflow in Cisco Mds 9000 Nx-Os
CVE-2017-6655
A vulnerability in the Fibre Channel over Ethernet (FCoE) protocol implementation in Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition when an FCoE-related process unexpectedly reloads. This vulnerability affects Cisco NX-OS Software on the following Cisco devices when they are configured for FCoE: Multilayer Director Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches. More Information: CSCvc91729. Known Affected Releases: 8.3(0)CV(0.833). Known Fixed Releases: 8.3(0)ISH(0.62) 8.3(0)CV(0.944) 8.1(1) 8.1(0.8)S0 7.3(2)D1(0.47).
Vulnerability class: Buffer Overflow
EPSS: 0.007 (50.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Cisco Mds_9000_nx-os — versions 7.3\(1\)d1\(1\), 7.3(1)d1(1)
- Cisco Nx-os — versions 8.0(1)s2, 8.3\(0\)cv\(0.833\), 8.3(0)cv(0.833)
- Cisco Nx-os_for_nexus_5500_platform_switches — versions 7.3\(1\)n1\(1\), 7.3(1)n1(1)
- Cisco Nx-os_for_nexus_5600_platform_switches — versions 7.3\(1\)n1\(1\), 7.3(1)n1(1)
- Cisco Nx-os_for_nexus_7700_series_switches — versions 8.0(1)(ed), 8.0\(1\)\(ed\)
- N/a Cisco Nx-os Software Fibre Channel Over Ethernet — versions Cisco NX-OS Software Fibre Channel over Ethernet
Weakness classification (CWE)
References
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- psirt@cisco.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-6655?
- CVE-2017-6655 is a medium-severity vulnerability in Cisco Mds 9000 Nx-Os, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2017-06-13.
- How severe is CVE-2017-6655?
- Medium severity. CVSS v3 base score is 6.5 out of 10.