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CVE-2021-35247

Improper Input Validation Vulnerability in Serv-U

Published
Last modified
published
Listed in CISA KEV
Fix
Fixed in 15.3
None on Exploit-DB, Metasploit or GitHub

Summary

Serv-U, SolarWinds' file transfer and server software, is affected by an improper input validation flaw in its web login screen when it uses LDAP authentication. The impact is that characters entering the login are not fully sanitized, though SolarWinds reports no downstream effects were detected.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

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 affect has been detected as the LDAP servers ignored improper characters. To insure proper input validation is completed in all environments. SolarWinds recommends scheduling an update to the latest version of Serv-U.

Timeline

  1. CVE published
  2. Added to CISA KEV

    CISA has evidence of exploitation in the wild

  3. CISA remediation deadline

    Due date for US federal agencies to patch

  4. Record last updated

Affected versions

  • SolarWinds Serv-U

    From 15.2.5 and previous versions · fixed in 15.3

References 2

solarwinds.com

documentation.solarwinds.com