Arbitrary file upload in Cela Link Clr-M20

CVE-2018-15137

CeLa Link CLR-M20 devices allow unauthorized users to upload any file (e.g., asp, aspx, cfm, html, jhtml, jsp, or shtml), which causes remote code execution as well. Because of the WebDAV feature, it is possible to upload arbitrary files by utilizing the PUT method.

Vulnerability class: Unrestricted File Upload

EPSS: 0.182 (96.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

  • cve@mitre.org (Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (VDB Entry, Third Party Advisory, exploit, x_refsource_EXPLOIT-DB)

Frequently asked questions

What is CVE-2018-15137?
CVE-2018-15137 is a critical-severity vulnerability in Cela Link Clr-M20, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2018-08-08.
How severe is CVE-2018-15137?
Critical severity. CVSS v3 base score is 9.8 out of 10.