CVE-2017-15956

published 2017-10-29

CVE-2017-15956: ConverTo Video Downloader & Converter 1.4.1 allows Arbitrary File Download via the token parameter to download.php.

Priority P3 54 high 7.5 CVSS 3.0

AV N AC L PR N UI N S U C H I N A N

EXPLOIT

ConverTo Video Downloader & Converter 1.4.1 allows Arbitrary File Download via the token parameter to download.php.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
converto_video_downloader_converter_project	converto_video_downloader_converter	—	—

Detection & IOCs extracted from sources · hover to see the quote

path download.php↗

url http://localhost/[PATH]/download.php?mime=video/webm&title=Efe&token=[FILENAME_to_BASE64]↗

• → Monitor HTTP requests to download.php containing a 'token' parameter; the token value is a Base64-encoded filename used to traverse and download arbitrary files from the server. ↗
• → Alert on requests to download.php where the 'mime' parameter is set to unexpected MIME types (e.g., text/plain, application/octet-stream) rather than legitimate video types, which may indicate an attacker attempting to exfiltrate non-video files. ↗
• → Decode Base64 values in the 'token' query parameter on requests to download.php; decoded values resolving to sensitive paths (e.g., /etc/passwd, config files) indicate active exploitation. ↗

• · The vulnerable endpoint is download.php within the ConverTo application path; the exact web root path ([PATH]) is installation-dependent and must be adjusted in detection rules accordingly. ↗
• · This vulnerability affects specifically version 1.4.1 of ConverTo Video Downloader & Converter; detections should be scoped to installations running this version. ↗

CVSS provenance

nvd v3.0 7.5 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd v2.0 5.0 MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N

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