CVE-2021-21892

CVSS V2 Medium 6.5 CVSS V3 Critical 9.9
Description
A stack-based buffer overflow vulnerability exists in the Web Manager FsUnmount functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.
Overview
  • CVE ID
  • CVE-2021-21892
  • Assigner
  • talos-cna@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-22T19:15:09
  • Last Modified Date
  • 2022-04-28T19:31:45
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:lantronix:premierwave_2050_firmware:8.9.0.0:r4:*:*:*:*:*:* 1 OR
cpe:2.3:h:lantronix:premierwave_2050:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6.5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.9
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.1
  • Impact Score
  • 6
References
Reference URL Reference Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1335 Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-21892
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21892
History
Created Old Value New Value Data Type Notes
2022-04-20 17:01:51 Added to TrackCVE
2022-12-06 04:36:13 2021-12-22T19:15Z 2021-12-22T19:15:09 CVE Published Date updated
2022-12-06 04:36:13 2022-04-28T19:31:45 CVE Modified Date updated
2022-12-06 04:36:13 Analyzed Vulnerability Status updated