Security readout for executives and security teams
Plain-English summary
CVE-2016-1500 is an ownCloud Server file disclosure flaw. In affected versions, an authenticated user with an incoming share may read certain hidden version files belonging to the sharing user when the file_versions app is enabled. This is mainly a confidentiality risk for organizations still running very old ownCloud branches.
Executive priority
Prioritize if legacy ownCloud is still used for sensitive shared files. This is not KEV-listed, but it can expose data across shares and should be remediated during legacy platform cleanup or urgent patching if affected conditions exist.
Technical view
ownCloud Server before 7.0.12, 8.0.10, 8.1.5, and 8.2.2 mishandles the return value of getOwner when file_versions is enabled. A remote authenticated user can leverage an incoming share to read files whose names start with .v and belong to the sharing user.
Likely exposure
Exposure appears limited to legacy ownCloud Server 7.0, 8.0, 8.1, and 8.2 deployments with file_versions enabled and user sharing in use. The source bundle does not identify other products or supported branches as affected.
Exploitation context
The source bundle describes remote authenticated exploitation through an incoming share. It does not cite public exploit code, real-world exploitation, or CISA KEV listing. Treat active exploitation as unconfirmed.
Researcher notes
Key prerequisites are authentication, an incoming share, and file_versions being enabled. The described target files start with .v and belong to the sharing user. The bundle provides no CVSS, CWE, exploit status, or detailed patch mechanics beyond the fixed version boundaries.
Mitigation direction
- Upgrade ownCloud Server to 7.0.12, 8.0.10, 8.1.5, 8.2.2, or later as applicable.
- Review the ownCloud advisory for branch-specific remediation guidance.
- If upgrading is delayed, assess whether file_versions is required and follow vendor guidance.
- Review sharing configurations for sensitive data exposure risk.
Validation and detection
- Inventory ownCloud Server instances and record exact version numbers.
- Check whether the file_versions application is enabled.
- Identify deployments using incoming user shares.
- Confirm remediation by verifying versions meet or exceed the fixed releases.
- Review available logs for unusual access to versioned hidden files.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2016-1500 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://owncloud.org/security/advisory/?id=oc-sa-2016-003CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.