Security readout for executives and security teams
Plain-English summary
CVE-2018-20794 is a path traversal issue in tecrail Responsive FileManager 9.13.4. A remote attacker could abuse image-saving functionality to write to image files outside the intended path. The sources do not provide CVSS, confirmed active exploitation, or a named fixed version.
Executive priority
Treat this as a targeted web application exposure issue. Prioritize internet-facing systems using Responsive FileManager 9.13.4, because the flaw allows remote file tampering and has public exploit material.
Technical view
The vulnerable path is the save_img action in ajax_calls.php. The path parameter is described as allowing traversal, enabling remote writes to arbitrary jpg, jpeg, or png files. Public exploit material is referenced, but the provided sources do not confirm active exploitation or vendor remediation details.
Likely exposure
Exposure is most likely where Responsive FileManager 9.13.4 is installed and reachable by untrusted users, especially on public web applications. The provided CVE metadata does not identify CPEs, deployment patterns, or broader affected versions.
Exploitation context
Exploit-DB is listed as a public exploit reference. KEV is false, and the provided sources do not state that this CVE is actively exploited in the wild.
Researcher notes
The record is sparse: no CVSS, CWE, CPE, or vendor fix is supplied in the bundle. Analysis should stay anchored to version 9.13.4, save_img in ajax_calls.php, and image-file write impact unless additional vendor evidence is obtained.
Mitigation direction
- Check vendor guidance for a fixed version or official mitigation.
- Remove or disable Responsive FileManager if it is not required.
- Restrict access to file manager endpoints to trusted administrators.
- Limit web server write permissions to intended upload directories.
- Monitor for unexpected image file changes outside normal upload paths.
Validation and detection
- Inventory web applications for Responsive FileManager 9.13.4.
- Confirm whether ajax_calls.php is reachable by untrusted users.
- Review logs for suspicious save_img requests using unusual path values.
- Check image directories for unexpected modifications or misplaced files.
- Verify filesystem permissions prevent writes outside approved locations.
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.
File access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-20794 mapping review
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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
- 45987CVE reference · exploit, x_refsource_EXPLOIT-DB
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.