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Common Applications CalendarApplication · Oracle

CVE-2021-2115

HIGH · 7.6 CVSS v3.1 Published 2021-01-20
Fix available
A fix is available. Upgrade to after 12.2.10 or later.
See remediation →
80/100
Remediation priority · High
Remotely reachable

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 Common Applications Calendar product of Oracle E-Business Suite (component: Tasks). Supported versions that are affected are 12.1.1-12.1.3 and 12.2.3-12.2.10. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Common Applications Calendar. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Common Applications Calendar, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Common Applications Calendar accessible data as well as unauthorized update, insert or delete access to some of Oracle Common Applications Calendar accessible data. CVSS 3.1 Base Score 7.6 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N).

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

Vulnerability in Oracle E-Business Suite Common Applications Calendar (Tasks component) allows low-privileged attackers with network access via HTTP to access, modify, or delete calendar data. The attack requires human interaction (social engineering/phishing) and can result in unauthorized access to sensitive calendar information and data manipulation.

MitigationApply Oracle Critical Patch Update (CPU) patches for CVE-2021-2115 when released. In the interim, restrict network access to Oracle E-Business Suite Calendar interfaces and implement additional authentication controls for the Tasks module.

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
Common Applications CalendarApplication
Affected:>= 12.1.1, <= 12.1.3>= 12.2.3, <= 12.2.10

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
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/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. Identify Oracle E-Business Suite installation
    Run the command: sqlplus APPS/<password>@<SID> select release_name from apps.fnd_product_groups; or check for Oracle E-Business Suite binaries in $APPL_TOP directory
    Affected if Oracle E-Business Suite is not installed - not affected. If installed, continue to next check.
  2. Determine Oracle Common Applications Calendar version
    Query: SELECT patch_level FROM applsys.fnd_patch_run_levels WHERE patch_level LIKE '%CALENDAR%'; or check the Oracle Applications Manager (OAM) interface for component versions
    Affected if Version falls within 12.1.1 to 12.1.3 OR 12.2.3 to 12.2.10 - potentially affected. Continue to next check.
  3. Verify Calendar Tasks module is enabled
    Log into Oracle E-Business Suite as System Administrator, navigate to Application > Register, confirm module 'CAL' or 'Calendar Tasks' status is 'Enabled'. Alternatively query: SELECT application_id, application_name, status FROM fnd_application WHERE application_name LIKE '%Calendar%';
    Affected if Calendar Tasks module is disabled - not affected. If enabled and version is in affected range, proceed to next check.
  4. Check network accessibility of Calendar HTTP endpoints
    Review web server configuration (Oracle HTTP Server or Oracle WebLogic) for exposed URLs containing '/OA_HTML/cal/', '/CAL/', or '/oracle/apps/cal/'. Check firewall rules for inbound access to ports 8000-8009 or 443/80 on E-Business Suite hosts.
    Affected if Calendar HTTP endpoints are publicly accessible from untrusted networks - at higher risk. If only accessible from trusted internal networks, lower risk but still potentially affected if version is vulnerable.

User is affected if Oracle E-Business Suite with Oracle Common Applications Calendar is installed, version is 12.1.1-12.1.3 or 12.2.3-12.2.10, the Calendar Tasks module is enabled, and network access to Calendar HTTP interfaces is possible for low-privileged attackers.

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.

From vendor data
Upgrade available Upgrade to a release after 12.2.10
Interim mitigation

Apply Oracle Critical Patch Update (CPU) patches for CVE-2021-2115 when released. In the interim, restrict network access to Oracle E-Business Suite Calendar interfaces and implement additional authentication controls for the Tasks module.

Fix this in Common Applications Calendar 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
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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-2021-2115 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
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