What is CVE-2018-18315?

CVE-2018-18315 is a high-severity vulnerability in Mossle Lemon, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.5/10. Published 2018-10-15.

How severe is CVE-2018-18315?

High severity. CVSS v3 base score is 7.5 out of 10.

Arbitrary file upload in Mossle Lemon

CVE-2018-18315

com/mossle/cdn/CdnController.java in lemon 1.9.0 allows attackers to upload arbitrary files because the copyMultipartFileToFile method in CdnUtils only checks for a ../ substring, and does not validate the file type and spaceName parameter.

Vulnerability class: Unrestricted File Upload

EPSS: 0.012 (64.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Mossle Lemon — versions 1.9.0
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-18315?: CVE-2018-18315 is a high-severity vulnerability in Mossle Lemon, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.5/10. Published 2018-10-15.
How severe is CVE-2018-18315?: High severity. CVSS v3 base score is 7.5 out of 10.