Vulnerability Details : CVE-2020-2503
If exploited, this stored cross-site scripting vulnerability could allow remote attackers to inject malicious code in File Station. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2020-2503
- cpe:2.3:a:qnap:qes:*:*:*:*:*:*:*:*
- cpe:2.3:a:qnap:qes:2.1.1:-:*:*:*:*:*:*
- cpe:2.3:a:qnap:qes:2.1.1:build_20200211:*:*:*:*:*:*
- cpe:2.3:a:qnap:qes:2.1.1:build_20200303:*:*:*:*:*:*
- cpe:2.3:a:qnap:qes:2.1.1:build_20200319:*:*:*:*:*:*
- cpe:2.3:a:qnap:qes:2.1.1:build_20200424:*:*:*:*:*:*
- cpe:2.3:a:qnap:qes:2.1.1:build_20200515:*:*:*:*:*:*
- cpe:2.3:a:qnap:qes:2.1.1:build_20200811:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-2503
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 27 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-2503
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
|
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST | |
|
9.0
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
2.3
|
6.0
|
QNAP Systems, Inc. |
CWE ids for CVE-2020-2503
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by:
- nvd@nist.gov (Primary)
- security@qnapsecurity.com.tw (Secondary)
-
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.Assigned by: security@qnapsecurity.com.tw (Secondary)
-
The product provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted.Assigned by: security@qnapsecurity.com.tw (Secondary)
References for CVE-2020-2503
-
https://www.qnap.com/zh-tw/security-advisory/qsa-20-17
Multiple Vulnerabilities in QES - Security Advisory | QNAPVendor Advisory
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