CVE-2020-3118
CVSS V2 High 8.3
CVSS V3 High 8.8
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).
Overview
- CVE ID
- CVE-2020-3118
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-02-05T18:15:10
- Last Modified Date
- 2022-12-23T16:59:18
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* | 1 | OR | 6.6.0 | 6.6.12 |
| cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* | 1 | OR | 7.0.0 | 7.0.2 |
| AND | ||||
| cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:asr_9000v:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:crs:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_1001:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_1002:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_1004:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_520:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540-12z20g-sys-a:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540-12z20g-sys-d:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540-24z8q2c-sys:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540-28z4c-sys-a:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540-28z4c-sys-d:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540-acc-sys:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540x-12z16g-sys-a:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540x-12z16g-sys-d:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-a:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-d:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540x-acc-sys:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:ios_xr:5.2.5:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:xrv_9000:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:* | 0 | OR | ||
| AND | ||||
| cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:A/AC:L/Au:N/C:C/I:C/A:C
- Access Vector
- ADJACENT_NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 8.3
- Severity
- HIGH
- Exploitability Score
- 6.5
- Impact Score
- 10
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- ADJACENT_NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.8
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rce | Vendor Advisory |
| http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html | Third Party Advisory VDB Entry |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-3118 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3118 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:50:25 | Added to TrackCVE | |||
| 2022-12-04 10:41:48 | psirt@cisco.com | ykramarz@cisco.com | CVE Assigner | updated |
| 2022-12-04 10:41:48 | 2020-02-05T18:15Z | 2020-02-05T18:15:10 | CVE Published Date | updated |
| 2022-12-04 10:41:48 | 2022-09-20T16:59:11 | CVE Modified Date | updated | |
| 2022-12-04 10:41:48 | Analyzed | Vulnerability Status | updated | |
| 2022-12-23 14:09:53 | Analyzed | Undergoing Analysis | Vulnerability Status | updated |
| 2022-12-23 14:09:54 | Weakness Enumeration | update | ||
| 2022-12-23 17:10:30 | 2022-12-23T16:59:18 | CVE Modified Date | updated | |
| 2022-12-23 17:10:30 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |