CVE intelligence and bounded remediation

CVE-2017-11151 — Synology Photo Station security vulnerability

Critical CVSS 9.8

A vulnerability in synotheme_upload.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 allows remote attackers to upload arbitrary files without authentication via the logo_upload action.

Severity
Critical
CVSS
9.8 (3.0)
Published
2017-08-08
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-287

Affected products

  • synology / photo_station
  • synology / photo_station / 6.3-2967

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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