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VID 16156
Severity 30
Port 21
Protocol TCP
Class FTP
Detailed Description According to its banner, the installed version of Serv-U is a version prior to 15.3. It is, therefore, affected by an improper input validation vulnerability. The Serv-U web login screen to LDAP authentication was allowing characters that were not sufficiently sanitized.

SolarWinds has updated the input mechanism to perform additional validation and sanitization.

Please Note: No downstream effect has been detected as the LDAP servers ignored improper characters.

* Note: This check solely relied on the version number of the remote FTP server to assess this vulnerability, so this might be a false positive.

* References:
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35247

* Platforms Affected:
Rhino Software, Inc., Serv-U FTP Server 15.3 prior
Microsoft Windows Any version
Recommendation Upgrade to latest version of Serv-U (15.3 or later), available from Serv-U Web site at http://www.serv-u.com/
Related URL CVE-2021-35247 (CVE)
Related URL (SecurityFocus)
Related URL (ISS)