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Rakuraku Pc Cloud AgentApplication · Dos Osaka

CVE-2023-22336

CRITICAL · 9.8 CVSS v3.1 Published 2023-03-06
Fix available
A fix is available. Upgrade to after 13.0.0.40 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Path traversal vulnerability in SS1 Ver.13.0.0.40 and earlier and Rakuraku PC Cloud Agent Ver.2.1.8 and earlier allows a remote attacker to upload a specially crafted file to an arbitrary directory. As a result of exploiting this vulnerability with CVE-2023-22335 and CVE-2023-22344 vulnerabilities together, it may allow a remote attacker to execute an arbitrary code with SYSTEM privileges by sending a specially crafted script to the affected device.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A path traversal vulnerability in SS1 and Rakuraku PC Cloud Agent allows a remote attacker to upload specially crafted files to arbitrary directories via specially crafted file paths. When chained with CVE-2023-22335 and CVE-2023-22344, this enables remote code execution with SYSTEM-level privileges.

MitigationUpgrade SS1 to a version later than 13.0.0.40 and Rakuraku PC Cloud Agent to a version later than 2.1.8. Given the critical CVSS score and SYSTEM-level privilege escalation, prioritize patching immediately and verify no indicators of compromise exist.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Rakuraku Pc Cloud AgentApplication
Affected:<= 2.1.8
Ss1Application
Affected:<= 13.0.0.40

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if SS1 is installed
    Check for the presence of Dos Osaka Ss1 software on the system. Look for installed applications or running services related to SS1.
    Affected if SS1 is installed and the version is 13.0.0.40 or earlier
  2. Identify if Rakuraku PC Cloud Agent is installed
    Check for the presence of Dos Osaka Rakuraku PC Cloud Agent on the system. Look for installed applications or running services related to this product.
    Affected if Rakuraku PC Cloud Agent is installed and the version is 2.1.8 or earlier
  3. Verify installed versions
    Locate and read the version information for SS1 and Rakuraku PC Cloud Agent. This may be found in installed program details, about dialogs, or version files included with the software.
    Affected if The installed version of either product falls within the affected range (SS1 <= 13.0.0.40 or Rakuraku PC Cloud Agent <= 2.1.8)
  4. Check if file upload feature is in use
    Since this vulnerability affects file upload functionality, determine whether the SS1 or Rakuraku PC Cloud Agent file upload features are enabled or actively used in your environment.
    Affected if File upload functionality is enabled or being used with these products
  5. Inspect for indicators of compromise
    Review system logs, file system, and network connections for signs of unauthorized file uploads or unexpected files in arbitrary directories that may indicate exploitation of this path traversal vulnerability.
    Affected if Unexpected files are found in directories outside the intended upload locations, or suspicious upload activity is logged

You are affected if either Dos Osaka SS1 version 13.0.0.40 or earlier or Dos Osaka Rakuraku PC Cloud Agent version 2.1.8 or earlier is installed and the file upload feature is enabled or used.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 13.0.0.40
Interim mitigation

Upgrade SS1 to a version later than 13.0.0.40 and Rakuraku PC Cloud Agent to a version later than 2.1.8. Given the critical CVSS score and SYSTEM-level privilege escalation, prioritize patching immediately and verify no indicators of compromise exist.

Recommended fix Moderate confidence

Rakuraku Pc Cloud Agent: 2.1.9 or later | SS1: 13.0.0.41 or later

  1. Identify the affected product(s) in your environment: Rakuraku Pc Cloud Agent or SS1 (or both)
  2. For Rakuraku Pc Cloud Agent: Upgrade to version 2.1.9 or later
  3. For SS1: Upgrade to version 13.0.0.41 or later
  4. Obtain the updated versions from the official vendor (Daiwa Office Systems Co., Ltd. / www.dos-osaka.co.jp)
  5. After upgrading, verify that the path traversal vulnerability is remediated
  6. Review system for any signs of compromise, as this vulnerability can be chained with CVE-2023-22335 and CVE-2023-22344 for remote code execution
Caveat Review release notes for any configuration or behavioral changes between versions

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Rakuraku Pc Cloud Agent Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-22336 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data