CVE-2020-3118
published 2020-02-05CVE-2020-3118: A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary…
high8.8CVSS 3.1
AVAACLPRNUINSUCHIHAH
KEVITW
CISA Known Exploited Vulnerabilitydue 2022-05-03
Exploited in the wild
A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_ios_xr_software | >= unspecified < 6.6.3 | 6.6.3 |
| cisco | ios_xr | — | — |
| cisco | ios_xr | — | — |
| cisco | ios_xr | — | — |
| cisco | ios_xr | — | — |
| cisco | ios_xr | — | — |
| cisco | ios_xr | — | — |
| cisco | ios_xr | >= 6.6.0 < 6.6.12 | 6.6.12 |
| cisco | ios_xr | >= 7.0.0 < 7.0.2 | 7.0.2 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vulncheck8.8HIGH
cisa8.8HIGH