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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (52.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
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\(1\)\(ed\)
- Cisco Nx-Os Software Fibre Channel Over Ethernet — versions Cisco NX-OS Software Fibre Channel over Ethernet
Weakness classification (CWE)
References
- www.securitytracker.com/id/1038628 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/98991 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607… (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.