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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).
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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AND
OR
*cpe:2.3:o:cisco:ios_xr:5.2.5:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*
AND
OR
*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:-:*:*:*:*:*:*:*
Changed
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:xrv_9000:-:*:*:*:*:*:*:*
AND
OR
*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
AND
OR
*cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*
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
AND
OR
*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
Reanalysis by NIST9/20/2022 12:59:11 PM
Action
Type
Old Value
New Value
Added
CWE
NIST CWE-787
Removed
CWE
NIST CWE-134
Initial Analysis by NIST2/10/2020 11:26:04 AM
Action
Type
Old Value
New Value
Added
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:ios_xr:5.2.5:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*
AND
OR
*cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*
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
Added
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:xrv_9000:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* versions from (including) 6.6.0 up to (excluding) 6.6.12
*cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (excluding) 7.0.2
Added
CVSS V2
NIST (AV:A/AC:L/Au:N/C:C/I:C/A:C)
Added
CVSS V3.1
NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
CWE
NIST CWE-134
Changed
Reference Type
http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html No Types Assigned
http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html Third Party Advisory, VDB Entry
Changed
Reference Type
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rce No Types Assigned