Improper Input Validation Vulnerability in Serv-U
CVE-2021-35247

4.3MEDIUM

Key Information:

Vendor
Solarwinds
Status
Serv-u
Vendor
CVE Published:
5 January 2022

Badges

👾 Exploit Exists🦅 CISA Reported

Summary

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.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply updates per vendor instructions.

Affected Version(s)

Serv-U 15.2.5 and previous versions < 15.3

References

https://www.solarwinds.com/trust-center/security-advisori...
x_refsource_MISC
https://documentation.solarwinds.com/en/success_center/se...
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CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

Credit

SolarWinds would like to thank Jonathan Bar Or of Microsoft (@yo_yo_yo_jbo) for reporting this vulnerability
.