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TI-2021-13399 Aliases CVE-2021-34360GHSA-fx2r-gh7f-x6hf

CSRF Bypass in Proxy Server

Priority LOW 39CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Tampering
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-352.

Summary

A cross-site request forgery (CSRF) vulnerability has been reported to affect QNAP device running Proxy Server. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of Proxy Server: QTS 4.5.x: Proxy Server 1.4.2 ( 2021/12/30 ) and later QuTS hero h5.0.0: Proxy Server 1.4.3 ( 2022/01/18 ) and later QuTScloud c4.5.6: Proxy Server 1.4.2 ( 2021/12/30 ) and later

Why it matters now

EPSS 0.00478 41st percentileScored 2026-11-07
Fix Fixed Proxy Server (QNAP Systems Inc.): 1.4.2 ( 2021/12/30 ), 1.4.3 ( 2022/01/18 )

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
QNAPProxy Serverbefore 1.4.2 ( 2021/12/30 )1.4.2 ( 2021/12/30 )Patch availableCNA
QNAPProxy Serverbefore 1.4.3 ( 2022/01/18 )1.4.3 ( 2022/01/18 )Patch availableCNA
QNAPProxy Serverbefore 1.4.2 ( 2021/12/30 )1.4.2 ( 2021/12/30 )Patch availableCNA
  • Proxy Server VendorQNAP Affected before 1.4.2 ( 2021/12/30 ) Fixed in 1.4.2 ( 2021/12/30 ) Patch available CNA
  • Proxy Server VendorQNAP Affected before 1.4.3 ( 2022/01/18 ) Fixed in 1.4.3 ( 2022/01/18 ) Patch available CNA
  • Proxy Server VendorQNAP Affected before 1.4.2 ( 2021/12/30 ) Fixed in 1.4.2 ( 2021/12/30 ) Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:qnap:nas_proxy_server:*:*:*:*:*:*:*:*1.4.0 to before 1.4.2VulnerableQNAP
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*4.5.1 – 4.5.4.2012Running onQNAP
cpe:2.3:a:qnap:nas_proxy_server:*:*:*:*:*:*:*:*1.4.0 to before 1.4.3VulnerableQNAP
cpe:2.3:o:qnap:quts_hero:h5.0.0:*:*:*:*:*:*:*h5.0.0Running onQNAP
cpe:2.3:o:qnap:qutscloud:c4.5.6:-:*:*:*:*:*:*c4.5.6Running onQNAP
  • cpe:2.3:a:qnap:nas_proxy_server:*:*:*:*:*:*:*:* Versions 1.4.0 to before 1.4.2 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:* Versions 4.5.1 – 4.5.4.2012 Running on ·QNAP
  • cpe:2.3:a:qnap:nas_proxy_server:*:*:*:*:*:*:*:* Versions 1.4.0 to before 1.4.3 Vulnerable ·QNAP
  • cpe:2.3:o:qnap:quts_hero:h5.0.0:*:*:*:*:*:*:* Versions h5.0.0 Running on ·QNAP
  • cpe:2.3:o:qnap:qutscloud:c4.5.6:-:*:*:*:*:*:* Versions c4.5.6 Running on ·QNAP

Remediation

  • Fix · CNA Proxy Server (QNAP Systems Inc.) Fixed in 1.4.2 ( 2021/12/30 )
  • Fix · CNA Proxy Server (QNAP Systems Inc.) Fixed in 1.4.3 ( 2022/01/18 )
  • Fix · CNA Proxy Server (QNAP Systems Inc.) Fixed in 1.4.2 ( 2021/12/30 )

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-34360
  2. 2026-10-03 Alias added: GHSA-fx2r-gh7f-x6hf

References

Advisory 1

  • TI-2017-05273 QNAP NAS application Proxy Server through version 1.2.0 allows remote attackers to run… CVSS 3.0CRITICAL 9.8
  • TI-2017-05271 QNAP NAS application Proxy Server through version 1.2.0 does not utilize CSRF protections. CVSS 3.0HIGH 8.8
  • TI-2021-13398 Stored XSS Vulnerability in Proxy Server CVSS 3.1MEDIUM 6.9
  • TI-2017-05272 Cross-site scripting (XSS) vulnerability in QNAP NAS application Proxy Server through… CVSS 3.0MEDIUM 6.1
  • TI-2021-13400 Reflected XSS Vulnerability in Proxy Server CVSS 3.1MEDIUM 6.1
  • TI-2017-05275 QNAP NAS application Proxy Server through version 1.2.0 does not authenticate requests… CVSS 3.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences