Vulnerability Details : CVE-2021-28807
Potential exploit
A post-authentication reflected XSS vulnerability has been reported to affect QNAP NAS running Q’center. If exploited, this vulnerability allows remote attackers to inject malicious code. QNAP have already fixed this vulnerability in the following versions of Q’center: QTS 4.5.3: Q’center v1.12.1012 and later QTS 4.3.6: Q’center v1.10.1004 and later QTS 4.3.3: Q’center v1.10.1004 and later QuTS hero h4.5.2: Q’center v1.12.1012 and later QuTScloud c4.5.4: Q’center v1.12.1012 and later
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2021-28807
- cpe:2.3:a:qnap:q\'center:*:*:*:*:*:*:*:*
- cpe:2.3:a:qnap:q\'center:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-28807
0.92%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 74 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-28807
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 | |
7.7
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
3.1
|
4.0
|
QNAP Systems, Inc. |
CWE ids for CVE-2021-28807
-
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: security@qnapsecurity.com.tw (Primary)
References for CVE-2021-28807
-
https://www.qnap.com/zh-tw/security-advisory/qsa-21-20
Post-Authentication Reflected XSS Vulnerability in Q'center - Security Advisory | QNAPVendor Advisory
-
https://www.shielder.it/advisories/qnap-qcenter-post-auth-remote-code-execution-via-qpkg/
Shielder - QNAP Q'center Post-Auth Remote Code Execution via QPKGExploit;Third Party Advisory
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https://www.shielder.it/advisories/qnap-qcenter-virtual-stored-xss/
Shielder - QNAP Q'center Virtual Appliance < 1.12.1014 Stored XSSExploit;Third Party Advisory
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