CVE-2021-21971

CVSS V2 Medium 4.3 CVSS V3 Medium 5.9
Description
An out-of-bounds write vulnerability exists in the URL_decode functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted MQTT payload can lead to an out-of-bounds write. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.
Overview
  • CVE ID
  • CVE-2021-21971
  • Assigner
  • talos-cna@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-02-04T23:15:10
  • Last Modified Date
  • 2022-07-29T16:29:14
Weakness Enumerations
CWE URL
CWE-787 http://cwe.mitre.org/data/definitions/787.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:sealevel:seaconnect_370w_firmware:1.3.34:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:sealevel:seaconnect_370w:-:*:*:*:*:*:*:* 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://talosintelligence.com/vulnerability_reports/TALOS-2021-1406 Not Applicable
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1397 Exploit Technical Description Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-21971
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21971
History
Created Old Value New Value Data Type Notes
2022-04-20 17:01:46 Added to TrackCVE
2022-12-06 08:36:15 2022-02-04T23:15Z 2022-02-04T23:15:10 CVE Published Date updated
2022-12-06 08:36:15 2022-07-29T16:29:14 CVE Modified Date updated
2022-12-06 08:36:15 Analyzed Vulnerability Status updated