Out-of-bounds write in Cisco Systems, Inc products - CVE-2020-3415
Published: August 27, 2020
Vulnerability identifier: #VU46103
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3415
CWE-ID: CWE-787
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in the Data Management Engine (DME). A remote attacker on the local network can send a specially crafted Cisco Discovery Protocol packet to a Layer 2-adjacent affected device, trigger out-of-bounds write and execute arbitrary code on the target system.
Affected software
Cisco NX-OS
UCS 6400 Series Fabric Interconnects
Cisco Nexus 3000 Series Switches
Cisco Nexus 9000 Series Switches NX-OS Mode
UCS 6400 Series Fabric Interconnects
Cisco Nexus 3000 Series Switches
Cisco Nexus 9000 Series Switches NX-OS Mode
How to mitigate CVE-2020-3415
Install updates from vendor's website.
Cisco NX-OS - update to 9.3.1
UCS 6400 Series Fabric Interconnects - addressed in versions 4.0.4h, 4.0.4i
Cisco Nexus 3000 Series Switches - addressed in versions 7.0.3 I7.7.8, 7.0.3 I7.7.9, 7.0.3 I7.8, 9.2.3, 9.3.1
Cisco Nexus 9000 Series Switches NX-OS Mode - addressed in versions 7.0.3 I7.7.8, 7.0.3 I7.7.9, 7.0.3 I7.8, 9.2.3, 9.3.1
UCS 6400 Series Fabric Interconnects - addressed in versions 4.0.4h, 4.0.4i
Cisco Nexus 3000 Series Switches - addressed in versions 7.0.3 I7.7.8, 7.0.3 I7.7.9, 7.0.3 I7.8, 9.2.3, 9.3.1
Cisco Nexus 9000 Series Switches NX-OS Mode - addressed in versions 7.0.3 I7.7.8, 7.0.3 I7.7.9, 7.0.3 I7.8, 9.2.3, 9.3.1