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Cloud Pak System CVE-2019-4130

HIGH
Unrestricted Upload of File with Dangerous Type (CWE-434)
2019-12-03 psirt@us.ibm.com
RCE IBM File Upload Cloud Pak System
8.8
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-434
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK

2 techniques across 2 tactics: Command and Control, Persistence

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived

A remote attacker could upload malicious files that can be executed on the server by sending crafted requests to the affected application.
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 2.0% exploitation probability (EPSS)

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AnalysisAI

IBM Cloud Pak System 2.3 and 2.3.0.1 could allow a remote attacker to upload arbitrary files, which could allow the attacker to execute arbitrary code on the vulnerable server. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. This Unrestricted File Upload vulnerability could allow attackers to upload malicious files that can be executed on the server.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. IBM Cloud Pak System 2.3 and 2.3.0.1 could allow a remote attacker to upload arbitrary files, which could allow the attacker to execute arbitrary code on the vulnerable server. IBM X-Force ID: 158280. Affected products include: Ibm Cloud Pak System.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

IBM Cloud Pak System 2.3 and 2.3.0.1 could allow a remote attacker to upload arbitrary files, which could allow the attacker to execute arbitrary code on the vulnerable server. IBM X-Force ID: 158280.

Threat Intelligence Overview

EPSS Score
2.0%
Top 22% exploitable
Data Quality
2 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 2.0%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Malicious File Upload HIGH

Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:ibm:cloud_pak_system:2.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:cloud_pak_system:2.3.0.1:*:*:*:*:*:*:*

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IBM Cloud Pak System 2.3.6.0 and 2.3.6.1 employ weaker-than-expected cryptographic algorithms, allowing an attacker who

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Same weakness CWE-434 – Unrestricted Upload of File with Dangerous Type

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References

Advisories & patches
PATCH https://www.ibm.com/support/pages/node/1118487 ADVISORY https://exchange.xforce.ibmcloud.com/vulnerabilities/158280

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