voidtools "Everything" vulnerable to HTTP header injection


The HTTP server of Everything provided by voidtools contains an HTTP header injection vulnerability (CWE-644).

Kusano Kazuhiko reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 6.1 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 5.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

  • Everything all versions except the Lite version

According to the developer, the Lite version does not include the HTTP server and therefore is not affected by this vulnerability.

On the web browser of a user who accessed a website which uses the product, an arbitrary script may be executed or the displayed page may be altered.

[Use Everything Lite version]
The developer recommends using the Everything Lite version, which does not include the HTTP server that may be affected by this vulnerability.
Also according to the developer, the HTTP server will be available only in plug-in format in the future.
Vendor Information

CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2021-20784

  1. JVN : JVN#68971465
Revision History

  • [2021/07/09]
      Web page was published