CVE-2018-17397

published 2018-09-28

CVE-2018-17397: SQL Injection exists in the AlphaIndex Dictionaries 1.0 component for Joomla! via the letter parameter.

Priority P2 65 critical 9.8 CVSS 3.0

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

EXPLOIT

SQL Injection exists in the AlphaIndex Dictionaries 1.0 component for Joomla! via the letter parameter.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
multiplanet	alphaindex_dictionaries	—	—

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

url http://localhost/[PATH]/index.php?option=com_aindexdictionaries&task=getArticlesPreview↗

command letter=" AND (SELECT 66 FROM(SELECT COUNT(*),CONCAT(CONCAT_WS(0x203a20,USER(),DATABASE(),VERSION()),(SELECT (ELT(66=66 ,1))),FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)-- VerAyari↗

path /index.php?option=com_aindexdictionaries&task=getArticlesPreview↗

• → Monitor POST requests to the Joomla component endpoint with the parameter `option=com_aindexdictionaries&task=getArticlesPreview`; SQL injection is delivered via the `letter` POST parameter. ↗
• → Look for error-based SQL injection patterns in the `letter` parameter, specifically use of CONCAT_WS, FLOOR(RAND(0)*2), INFORMATION_SCHEMA.PLUGINS GROUP BY, and the comment marker `-- VerAyari`. ↗
• → HTTP 500 responses containing 'Duplicate entry' and 'for key group_key' in the body are a strong indicator of successful error-based SQL injection exploitation against this component. ↗
• → SQL injection exists in the `letter` parameter of the AlphaIndex Dictionaries 1.0 Joomla component; flag any request where `letter` contains SQL metacharacters or subquery syntax. ↗

• · The exploit was demonstrated against version 1.0 of the component only; other versions are not confirmed vulnerable. ↗

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 7.5 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P

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