CVE-2020-3118

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-3118
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).

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

8.3 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:A/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 6.5 / Impact : 10.0

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link 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
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
OR cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-12z20g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-12z20g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-24z8q2c-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-28z4c-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-28z4c-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-acc-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-12z16g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-12z16g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-acc-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:xrv_9000:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:cisco:ios_xr:5.2.5:*:*:*:*:*:*:*
OR cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_6008:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*
OR cpe:2.3:h:cisco:asr_9000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9920:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:crs-x:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:*
History

23 Dec 2022, 16:59

Type Values Removed Values Added
First Time Cisco asr 9000
Cisco asr 9920
Cisco ncs 6008
Cisco crs-x
Cisco asr 9903
CPE cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_520:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_1002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_1001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_1004:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:crs:-:*:*:*:*:*:*:*		 cpe:2.3:h:cisco:asr_9920:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_6008:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:crs-x:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:*

20 Sep 2022, 16:59

Type Values Removed Values Added
CWE CWE-134 CWE-787
Information

Published : 2020-02-05 18:15

Updated : 2023-12-10 13:13

NVD link : CVE-2020-3118

Mitre link : CVE-2020-3118

CVE.ORG link : CVE-2020-3118

JSON object : View

Products Affected

cisco

  • asr_9001
  • asr_9000v
  • asr_9920
  • ncs_5501
  • asr_9922
  • ncs_6008
  • asr_9912
  • asr_9903
  • ncs_540l
  • ncs_540x-16z4g8q2c-d
  • asr_9910
  • crs-x
  • asr_9901
  • asr_9906
  • ncs_540x-acc-sys
  • asr_9006
  • ncs_5502-se
  • ncs_540-28z4c-sys-a
  • asr_9000
  • xrv_9000
  • ncs_540x-16z4g8q2c-a
  • ncs_5502
  • ncs_540x-12z16g-sys-d
  • ncs_540-28z4c-sys-d
  • ncs_540-12z20g-sys-d
  • ncs_540-acc-sys
  • ios_xr
  • ncs_540-12z20g-sys-a
  • ncs_5501-se
  • ncs_540-24z8q2c-sys
  • asr_9904
  • ncs_5516
  • ncs_540x-12z16g-sys-a
  • ncs_6000
  • ncs_5508
  • ncs_560
  • asr_9010
CWE
CWE-787

Out-of-bounds Write

CWE-134

Use of Externally-Controlled Format String