Zeroshell vulnerable to OS command injection


The web interface of Zeroshell, Linux distribution provided by Zeroshell.org, contains an OS command injection vulnerability (CWE-78).

Hirukawa Norihiko of MYT Consulting Inc. 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 9.8 (Critical) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
CVSS V2 Severity:
Base Metrics 7.5 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

  • Zeroshell 3.9.3 and earlier

The reporter verified this vulnerability on 3.9.3.
It is unknown whether the issue is fixed or not on later versions.

Processing a crafted HTTP request may lead to an arbitrary OS command execution.

[Stop using the product]
The developer states that the affected product is no longer being developed and is End-of-support in 2021.
The developer recommends stop using the product.
Vendor Information

CWE (What is CWE?)

  1. OS Command Injection(CWE-78) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2020-29390

  1. JVN : JVN#44033918
  2. National Vulnerability Database (NVD) : CVE-2020-29390
  3. Related document : Zeroshell 3.6.0/3.7.0 Net Services - Remote Code Execution
Revision History

  • [2024/02/07]
      Web page was published