CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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2DescriptionNVD
In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.
AnalysisAI
SQL injection in ProFTPD 1.3.9a and earlier allows remote attackers to execute arbitrary SQL commands when the 'UseReverseDNS on' configuration is enabled. The vulnerability exists in mod_wrap2_sql.c where attacker-controlled reverse DNS hostnames are passed unescaped into SQL queries during client access control checks. …
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RemediationAI
Within 24 hours: Identify all ProFTPD instances running version 1.3.9a or earlier and verify UseReverseDNS configuration status via 'proftpd.conf' review. Within 7 days: For systems with UseReverseDNS enabled, disable this feature (set 'UseReverseDNS off') or apply upstream fix via GitHub commit 7666224 if available in your build pipeline; test thoroughly in staging. …
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External POC / Exploit Code
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GHSA-jmg2-v72j-gmvc