CVE-2018-6211 : On D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware

On D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware 1.0.3, 1.0.37, 1.3.1, 1.3.3, 1.3.7, 1.4.0, and 2.0.22, OS command injection is possible as a result of incorrect processing of the res_buf parameter to index.cgi.

Published 2018-06-20 16:29:00

Updated 2023-04-26 18:55:31

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2018-6211

D-link » Dir-620 Firmware » Version: 1.3.3
cpe:2.3:o:d-link:dir-620_firmware:1.3.3:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-620 » Version: N/A
D-link » Dir-620 Firmware » Version: 1.3.7
cpe:2.3:o:d-link:dir-620_firmware:1.3.7:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-620 » Version: N/A
D-link » Dir-620 Firmware » Version: 1.4.0
cpe:2.3:o:d-link:dir-620_firmware:1.4.0:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-620 » Version: N/A
D-link » Dir-620 Firmware » Version: 2.0.22
cpe:2.3:o:d-link:dir-620_firmware:2.0.22:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-620 » Version: N/A
D-link » Dir-620 Firmware » Version: 1.0.37
cpe:2.3:o:d-link:dir-620_firmware:1.0.37:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-620 » Version: N/A
D-link » Dir-620 Firmware » Version: 1.0.3
cpe:2.3:o:d-link:dir-620_firmware:1.0.3:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-620 » Version: N/A
D-link » Dir-620 Firmware » Version: 1.3.1
cpe:2.3:o:d-link:dir-620_firmware:1.3.1:*:*:*:*:*:*:*
Matching versions
When used together with: Dlink » Dir-620 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2018-6211

EPSS FAQ

17.22%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 94 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-6211

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
9.0	HIGH	AV:N/AC:L/Au:S/C:C/I:C/A:C	8.0	10.0	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
7.2	HIGH	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	1.2	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: High User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2018-6211

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-6211

http://www.securitynewspaper.com/2018/05/25/d-link-dir-620-routers-critical-vulnerabilities/

D-Link DIR-620 Routers with Critical Vulnerabilities
Third Party Advisory

CVEs referencing this url
https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/

Backdoor Account Found in D-Link DIR-620 Routers
Third Party Advisory

CVEs referencing this url
https://securelist.com/backdoors-in-d-links-backyard/85530/

Backdoors in D-Link’s backyard | Securelist
Exploit;Third Party Advisory

CVEs referencing this url
https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html

Kaspersky discovered a backdoor account and other issues in D-Link DIR-620 RoutersSecurity Affairs
Third Party Advisory

CVEs referencing this url

Jump to

Vulnerability Details : CVE-2018-6211

Products affected by CVE-2018-6211

Exploit prediction scoring system (EPSS) score for CVE-2018-6211

CVSS scores for CVE-2018-6211

CWE ids for CVE-2018-6211

References for CVE-2018-6211