Security readout for executives and security teams
Plain-English summary
CVE-2017-11516 is a cross-site scripting issue in Yii Framework 2.0.12. It affects the debug exception screen when debug mode is enabled. The main business risk is a production or internet-facing environment accidentally exposing debug error pages that render unsafe exception data.
Executive priority
Prioritize if Yii 2.0.12 is used in production or exposed staging. Otherwise, handle through normal patch and configuration hygiene. The key decision is confirming whether debug exception pages are reachable outside trusted networks.
Technical view
The CVE describes XSS in framework/views/errorHandler/exception.php caused by mishandling $exception->errorInfo on the exception screen. The source bundle points to a Yii pull request and file diff, but provides no CVSS score, CWE, complete affected-version range, or release advisory.
Likely exposure
Exposure is likely limited to Yii Framework 2.0.12 applications with debug mode enabled and the exception screen reachable. Development and staging systems are the most obvious candidates, but production misconfiguration would raise urgency.
Exploitation context
The CVE is not marked KEV, and the provided sources do not show active exploitation. Practical abuse depends on debug exception output being accessible and attacker-controlled data reaching errorInfo. Evidence is incomplete beyond the CVE description and Yii PR references.
Researcher notes
The public record is sparse: no CVSS, CWE, affected CPEs, or exploit evidence are provided. Use the Yii PR and diff to identify the exact code change, then validate local versions and debug exposure without generating exploit payloads.
Mitigation direction
- Disable Yii debug mode in all production environments.
- Restrict access to development and staging error pages.
- Review Yii vendor guidance and apply the relevant fixed release or patch.
- Verify production error handling returns generic error pages.
- Treat exposed debug pages as a configuration incident.
Validation and detection
- Inventory applications using Yii Framework 2.0.12.
- Check runtime configuration for debug mode in each environment.
- Confirm public error responses do not expose Yii exception screens.
- Review dependency lockfiles for the relevant Yii fix.
- Record any internet-facing systems still exposing debug output.
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-2017-11516 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://github.com/yiisoft/yii2/pull/14492CVE reference · x_refsource_CONFIRM
- https://github.com/yiisoft/yii2/pull/14492/files/feb4067de8a58f391a66e395192b0d83a8109b95CVE 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.