CVE-2018-14916: LOYTEC LGATE-902 6.3.2 devices allow Arbitrary file deletion.

PriorityP269critical9.1CVSS 3.0

AVNACLPRNUINSUCNIHAH

EXPLOIT

EPSS

17.20%

96.7th percentile

LOYTEC LGATE-902 6.3.2 devices allow Arbitrary file deletion.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
loytec	lgate-902_firmware	< 6.4.2	6.4.2

Detection & IOCsextracted from sources · hover to see the quote

url/webui/file_guest?path=/var/www/documentation/../../../../../etc/passwd&flags=1152↗

path/webui/file_guest↗

→Send a GET request to /webui/file_guest with a path parameter containing a directory traversal sequence targeting /etc/passwd; a 200 response containing 'root:[x*]:0:0' confirms exploitation. ↗
→The traversal payload uses /var/www/documentation/ as the base path and escapes five directory levels to reach /etc/passwd; monitor for this pattern in HTTP access logs on LGATE-902 devices. ↗
→The query parameter 'flags=1152' is consistently present in the exploit request and can serve as an additional detection signal alongside the traversal path. ↗

·The vulnerability affects LOYTEC LGATE-902 devices running firmware version 6.3.2 (NVD) / prior to 6.4.2 (Nuclei template); the exploit path and flags value may differ on other firmware versions. ↗
·The Nuclei template targets unauthenticated access (PR:N), meaning no credentials are required; detections should cover unauthenticated GET requests to /webui/file_guest. ↗

CVSS provenance

nvdv3.09.1CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

nvdv2.09.4CRITICALAV:N/AC:L/Au:N/C:N/I:C/A:C

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