CVE-2021-27342

CVSS V2 Medium 4.3 CVSS V3 Medium 5.9
Description
An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack
Overview
  • CVE ID
  • CVE-2021-27342
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-05-17T13:15:07
  • Last Modified Date
  • 2021-05-24T20:14:05
Weakness Enumerations
CWE URL
CWE-203 http://cwe.mitre.org/data/definitions/203.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:dlink:dir-842e_firmware:*:*:*:*:*:*:*:* 1 OR 3.0.2
cpe:2.3:h:dlink:dir-842e:r1:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5.9
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.2
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py Exploit Third Party Advisory
https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html Exploit Third Party Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-27342
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27342
History
Created Old Value New Value Data Type Notes
2022-05-10 16:15:01 Added to TrackCVE
2022-12-05 02:29:27 2021-05-17T13:15Z 2021-05-17T13:15:07 CVE Published Date updated
2022-12-05 02:29:27 2021-05-24T20:14:05 CVE Modified Date updated
2022-12-05 02:29:27 Analyzed Vulnerability Status updated