dbcve.org
Secure Global DesktopApplication · Oracle

CVE-2021-2177

CRITICAL · 10.0 CVSS v3.1 Published 2021-04-22
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

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
Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Gateway). The supported version that is affected is 5.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Secure Global Desktop. While the vulnerability is in Oracle Secure Global Desktop, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle Secure Global Desktop.

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

Unauthenticated remote code execution vulnerability in the Gateway component of Oracle Secure Global Desktop version 5.6. Attackers with network access can exploit this flaw via multiple protocols to gain complete takeover of the SGD system, and may also pivot to impact additional products in the environment.

MitigationApply Oracle's available patch for CVE-2021-2177 or upgrade to a supported version of Oracle Secure Global Desktop. If patching is not immediately feasible, restrict network access to the Gateway component using network segmentation or firewall rules.

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
Secure Global DesktopApplication
Affected:= 5.6

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
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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. Verify Oracle Secure Global Desktop is installed
    Check for SGD installation directories (typically /opt/SGD or C:\Program Files\Oracle\Secure Global Desktop) or look for running processes named 'sgd' or 'tomcat' associated with SGD
    Affected if SGD software is found on the system
  2. Confirm the installed version is 5.6
    Check the version of Oracle Secure Global Desktop - look in the installation directory for a version file, or run: 'pkginfo -l SGD' on Solaris/Linux, or check Add/Remove Programs on Windows
    Affected if The installed version is exactly 5.6 (no other version is affected)
  3. Identify if the Gateway component is enabled
    Check if the SGD Gateway service is running and enabled - look for the 'sgdGateway' process or check the SGD administration console for Gateway component status
    Affected if The Gateway component is installed and running
  4. Assess network exposure of the Gateway service
    Check which network interfaces and ports the Gateway is bound to - review SGD configuration files (gateway.xml or sgd.conf) and run 'netstat -an | grep <gateway_port>' to identify listening interfaces
    Affected if The Gateway is listening on accessible network interfaces (especially wildcard 0.0.0.0) rather than localhost only

The system is affected only if Oracle Secure Global Desktop version 5.6 is installed with the Gateway component enabled and exposed to network 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
Patch available Apply the vendor patch
Vendor patch www.oracle.com →
Interim mitigation

Apply Oracle's available patch for CVE-2021-2177 or upgrade to a supported version of Oracle Secure Global Desktop. If patching is not immediately feasible, restrict network access to the Gateway component using network segmentation or firewall rules.

Recommended fix Moderate confidence

Apply Oracle Critical Patch Update April 2021 to Secure Global Desktop 5.6

  1. Review the Oracle Critical Patch Update advisory for April 2021 at https://www.oracle.com/security-alerts/cpuapr2021.html to locate the specific patch for Secure Global Desktop 5.6
  2. Download the applicable patch from Oracle Support
  3. Apply the patch according to Oracle's installation instructions
  4. Restart the Secure Global Desktop services as required by the patch
  5. Verify the patch was applied successfully and the vulnerability is mitigated

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

Fix this in Secure Global Desktop Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA2.0 h
20.0 hours of engineering $3,500
Get the patch applied

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2021-2177 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

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-2021-2177 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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