CVE-2018-9126

published 2018-04-04

CVE-2018-9126: The DNNArticle module 11 for DNN (formerly DotNetNuke) allows remote attackers to read the web.config file, and consequently discover database credentials, via…

Priority P2 71 critical 9.8 CVSS 3.0

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

EXPLOIT

The DNNArticle module 11 for DNN (formerly DotNetNuke) allows remote attackers to read the web.config file, and consequently discover database credentials, via the /GetCSS.ashx/?CP=%2fweb.config URI.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
zldnn	dnnarticle	—	—

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

url /GetCSS.ashx/?CP=%2fweb.config↗

path desktopmodules/DNNArticle/GetCSS.ashx/?CP=%2fweb.config&smid=512&portalid=3↗

• → Monitor HTTP requests targeting GetCSS.ashx with a 'CP' parameter containing path traversal sequences (e.g., %2f or /) pointing to web.config or other sensitive files. ↗
• → Alert on requests to desktopmodules/DNNArticle/GetCSS.ashx with query parameters referencing web.config, which may indicate attempted credential harvesting via directory traversal. ↗

• · The exploit URL includes 'smid' and 'portalid' parameters that may vary per installation; detection rules should focus on the CP parameter containing web.config rather than exact smid/portalid values. ↗
• · Successful exploitation exposes database credentials stored in web.config; any confirmed hit should trigger immediate credential rotation for the affected DNN database. ↗

CVSS provenance

nvd v3.0 9.8 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

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