If exploited, this absolute path traversal vulnerability could allow attackers to traverse files in File Station. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
Published 2020-12-24 02:15:13
Updated 2020-12-28 15:31:46
View at NVD,   CVE.org
Vulnerability category: Directory traversalFile inclusionInput validationBypassGain privilege

Exploit prediction scoring system (EPSS) score for CVE-2020-2504

0.24%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 62 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-2504

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
NIST
7.5
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.9
3.6
NIST
5.8
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
3.9
1.4
QNAP Systems, Inc.

CWE ids for CVE-2020-2504

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: security@qnapsecurity.com.tw (Secondary)
  • The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security@qnapsecurity.com.tw (Secondary)
  • The product allows user input to control or influence paths or file names that are used in filesystem operations.
    Assigned by: security@qnapsecurity.com.tw (Secondary)
  • The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
    Assigned by: security@qnapsecurity.com.tw (Secondary)

References for CVE-2020-2504

Products affected by CVE-2020-2504

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