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Diskstation Manager Unified ControllerApplication · Synology

CVE-2023-0142

HIGH · 8.1 CVSS v3.1 Published 2023-06-13
Fix available
A fix is available. Upgrade to 1.3.1-9346 / 7.1-42661 or later.
See remediation →
87/100
Remediation priority · High
Remotely reachable 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
Uncontrolled search path element vulnerability in Backup Management functionality in Synology DiskStation Manager (DSM) before 6.2.4-25556-8, 7.0.1-42218-7 and 7.1-42661 allows remote authenticated users with administrator privileges to read or write arbitrary files via unspecified vectors.

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 · high confidence

Uncontrolled search path element vulnerability in Synology DSM's Backup Management functionality allows authenticated administrators to read/write arbitrary files by manipulating the search path. This path injection flaw exists in versions prior to 6.2.4-25556-8, 7.0.1-42218-7, and 7.1-42661.

MitigationUpgrade Synology DSM to version 6.2.4-25556-8, 7.0.1-42218-7, 7.1-42661 or later to remediate the vulnerability.

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
Diskstation Manager Unified ControllerApplication
Affected:= 3.1
Router ManagerApplication
Affected:>= 1.2, < 1.3.1-9346= 1.3.1-9346
Diskstation ManagerOperating system
Affected:>= 6.2, < 7.1-42661

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

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. Check Synology DiskStation Manager version
    Access the web interface (DSM) and go to Control Panel > System > DSM Update, or run `cat /etc/VERSION` via SSH to retrieve the installed DSM version number and build number.
    Affected if The installed version is lower than 7.1-42661, 7.0.1-42218, or 6.2.4-25556 (for DSM 6.2.x) OR exactly equals 3.1 for DiskStation Manager Unified Controller.
  2. Check Synology Router Manager version
    Access the web interface (SRM) and go to Control Panel > System > Update & Restore, or run `cat /etc.defaults/VERSION` via SSH on the router device.
    Affected if The installed SRM version is 1.2.x through 1.3.1-9346 (any version from 1.2 up to and including 1.3.1-9346).
  3. Verify Backup Management feature is in use
    Log into DSM as administrator and navigate to Backup & Replication > Backup to verify if any backup tasks using Backup Management are configured, or check for presence of backup-related packages via `grep -r backup /var/packages/` or Package Center.
    Affected if Backup Management functionality is actively configured or the Backup & Replication service is enabled on the system.
  4. Confirm administrator access exists
    Verify that you have administrative privileges on the Synology device. This vulnerability requires an authenticated administrator session to exploit the search path manipulation.
    Affected if You have valid administrator credentials with write access to Backup Management configuration, which is a prerequisite for exploitation.

Your environment is affected if you are running any Synology DSM version 6.2 through 7.1-42660 (excluding 6.2.4-25556-8, 7.0.1-42218-7, and 7.1-42661), SRM 1.2 to 1.3.1-9346, or DiskStation Manager Unified Controller 3.1, AND you have Backup Management enabled with administrator access.

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 1.3.1-9346 / 7.1-42661 or later
Fixed in 1.3.1-93467.1-42661
Interim mitigation

Upgrade Synology DSM to version 6.2.4-25556-8, 7.0.1-42218-7, 7.1-42661 or later to remediate the vulnerability.

Recommended fix Moderate confidence

DSM 7.1-42661 or later (or latest DSM 7.x); for SRM: 1.3.1-9346 or later

  1. 1. Identify the current DSM version by logging into the web interface and checking Control Panel > System > Update & Restore > DSM Update
  2. 2. For DiskStation Manager (DSM): Upgrade to version 7.1-42661 or later (recommended: latest DSM 7.x release)
  3. 3. For Router Manager (SRM): Upgrade to version 1.3.1-9346 or later (recommended: latest SRM 1.3.x release)
  4. 4. For Diskstation Manager Unified Controller (DUC): Upgrade to version 3.1 or later if available
  5. 5. After upgrade, verify the new version by checking Control Panel > System > System Information
  6. 6. Test Backup Management functionality to ensure the vulnerability is remediated
Caveat Upgrading DSM may require reinstallation of some packages; backup configuration before upgrading

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

Fix this in Diskstation Manager Unified Controller Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,390
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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-2023-0142 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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