National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2020-3118 Detail

Current Description

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).

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 8.8 HIGH
Vector:  CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Nist CVSS score does not match with CNA score
CNA:  Cisco Systems, Inc.
Base Score: 8.8 HIGH
Vector:  CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rce Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-134 Use of Externally-Controlled Format String NIST   Cisco Systems, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
6.6.0
Up to (excluding)
6.6.12
 cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
7.0.0
Up to (excluding)
7.0.2

Configuration 2 ( hide )
 cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:crs:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_1001:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_1002:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_1004:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_520:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540-12z20g-sys-a:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540-12z20g-sys-d:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540-24z8q2c-sys:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540-28z4c-sys-a:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540-28z4c-sys-d:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540-acc-sys:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540x-12z16g-sys-a:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540x-12z16g-sys-d:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-a:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-d:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540x-acc-sys:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:cisco:ios_xr:5.2.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 4 ( hide )
 cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:xrv_9000:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 5 ( hide )
 cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 6 ( hide )
 cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-3118
NVD Published Date:
02/05/2020
NVD Last Modified:
02/10/2020