CVE-2025-47411: Authenticated User Can Silently Take Over Apache StreamPipes as Administrator

Aegiron 11 mins0

Vulnerability Overview

  • CVE ID: CVE-2025-47411
  • Affected Product: Apache StreamPipes
  • Affected Versions: All versions up to and including 0.97.0
  • Fixed Version: 0.98.0
  • Vulnerability Type: Authentication Bypass / Privilege Escalation
  • Attack Vector: Remote (authenticated, low-privilege user)
  • Attack Complexity: Low
  • Privileges Required: Low (valid non-administrator account)
  • User Interaction: None
  • Scope: Changed
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: Medium

This vulnerability allows a legitimate non-administrator user to escalate privileges and gain full administrative control over the application.

CVSS v3.1 Assessment

  • Base Score: 8.8 (High)
  • Severity: High

The score reflects that a low-privileged authenticated user can fully compromise administrative access without exploiting memory corruption, bypassing cryptographic controls, or relying on social engineering. The impact affects the entire trust model of the application.

Exploitability

  • Exploitability: High

Exploit Availability

  • No publicly released exploit frameworks are known at the time of disclosure
  • Exploitation is straightforward for anyone familiar with JWT authentication and REST APIs
  • The attack can be executed manually using common tools such as curl, Postman, or Burp Suite

No specialized tooling or automation is required.

Root Cause Analysis

The vulnerability originates from improper handling of user identity during user creation, modification, and JWT token issuance.

Key Design Weaknesses

  • Username uniqueness is not reliably enforced
  • User identity is trusted based on mutable username values rather than immutable internal identifiers
  • JWT tokens embed user attributes that can be altered through profile manipulation
  • Token issuance and refresh processes do not adequately re-validate identity ownership

Because of these flaws, a non-administrator user can change their username to match an existing administrator and then obtain a JWT that grants administrative privileges.

Exploitation Flow

Step-by-Step Attack Scenario

  1. The attacker logs in using a valid non-administrator account
  2. They identify an administrator username (commonly visible in UI elements, logs, or API responses)
  3. The attacker submits a user update or creation request that changes their username to match the administrator’s username
  4. Due to insufficient backend validation, the system:
    • Accepts the username change
    • Issues a new JWT token
  5. The JWT token now contains administrator identity and role claims
  6. The attacker refreshes or reuses the token
  7. The application grants full administrative access

The attack does not rely on race conditions, brute force attempts, or timing manipulation.

JWT Token Abuse Details

The generated JWT token typically includes:

  • Username
  • Role or permission claims

The backend treats these claims as authoritative and does not re-verify them against immutable user records. Once issued, the token allows unrestricted administrative operations, including:

  • Access to admin-only APIs
  • System and pipeline configuration changes
  • User creation, modification, and deletion
  • Data ingestion, modification, and removal

Potential Impact

  • Complete administrative takeover of the platform
  • Unauthorized access to sensitive or regulated data streams
  • Manipulation or disruption of processing pipelines
  • Creation of hidden or persistent backdoor accounts
  • Disabling of security controls and audit mechanisms
  • Loss of data integrity
  • Regulatory and compliance violations

MITRE ATT&CK Mapping

  • TA0001 – Initial Access
    • Valid Accounts (T1078)
  • TA0004 – Privilege Escalation
    • Abuse Elevation Control Mechanism (T1548)
  • TA0005 – Defense Evasion
    • Modify Authentication Process (T1556)
  • TA0006 – Credential Access
    • Forge Web Credentials (T1606)
  • TA0008 – Lateral Movement
    • Exploitation of Application Services (T1210)

Indicators of Compromise

  • Privilege elevation events without administrator approval
  • Administrative actions performed by users previously observed as non-admin
  • JWT tokens containing inconsistent or mismatched sub, username, or role claims
  • Duplicate usernames mapped to different internal user IDs
  • Token refresh activity immediately following profile updates

Detection Strategy

Relevant Log Sources

  • Application authentication logs
  • User management and identity API logs
  • JWT issuance and refresh logs
  • Audit logs for role or permission changes
  • Reverse proxy or API gateway logs

Suspicious Behaviors to Monitor

  • Username update requests targeting known administrator usernames
  • Token refresh or re-authentication immediately after user profile changes
  • Administrative API calls from users with no prior administrative history
  • Multiple internal user IDs associated with the same username

Conceptual Detection Logic

IF
  previous_role != "admin"
AND
  current_role == "admin"
AND
  no_admin_approval_event
THEN
  alert("Potential privilege escalation via username manipulation")

Payload Characteristics

There is no single static exploit payload. Malicious requests generally involve:

  • Modification of the username field
  • Targeting an existing administrator username
  • A subsequent JWT refresh or re-authentication request

Requests are typically JSON-based REST API calls.

Public Proof-of-Concept Status

  • No official public proof-of-concept has been released
  • Exploitation is trivial and reproducible
  • Any user with API access and basic JWT knowledge can reproduce the issue in vulnerable versions

SIEM Detection Rules

Splunk – Suspicious Username Change to Admin Identity

index=streampipes_logs
("updateUser" OR "createUser")
| rex field=_raw "\"username\":\"(?<new_username>[^\"]+)\""
| join new_username [
    search index=streampipes_logs role=admin
    | rex field=_raw "\"username\":\"(?<admin_username>[^\"]+)\""
]
| where new_username=admin_username
| stats count by user_id, new_username, src_ip
| where count > 0

Rationale: Legitimate systems should never allow a standard user to adopt an existing administrator username.

Splunk – JWT Refresh After Identity Modification

index=streampipes_logs
("tokenRefresh" OR "jwtIssued")
| transaction user_id maxspan=5m
| search ("updateUser" OR "profileChange")
| stats count by user_id, src_ip

JWT refresh immediately following a profile change is a key signal for this exploit.

Splunk – Sudden Administrative Activity

index=streampipes_logs
("admin" AND ("createPipeline" OR "deleteUser" OR "updateConfig"))
| stats earliest(_time) as first_admin_action by user_id
| join user_id [
    search index=streampipes_logs role!=admin
    | stats count by user_id
]

Microsoft Sentinel – Identity Swap Attempt

AppLogs
| where Message has_any ("updateUser", "createUser")
| extend NewUsername = extract(@"\""username\"":\""([^\""]+)\""", 1, Message)
| join kind=inner (
    AppLogs
    | where Message has "role\":\"admin\""
    | extend AdminUsername = extract(@"\""username\"":\""([^\""]+)\""", 1, Message)
) on $left.NewUsername == $right.AdminUsername
| project TimeGenerated, NewUsername, UserId, IPAddress

Microsoft Sentinel – JWT Abuse Correlation

AppLogs
| where Message has_any ("jwtIssued", "tokenRefresh")
| summarize min(TimeGenerated), max(TimeGenerated) by UserId, IPAddress
| join kind=inner (
    AppLogs
    | where Message has_any ("updateUser", "profileChange")
) on UserId
| where datetime_diff("minute", max_TimeGenerated, min_TimeGenerated) < 5

Microsoft Sentinel – Admin Action Without Approval

AppLogs
| where Message has_any ("deleteUser", "updateConfig", "createPipeline")
| extend Role = extract(@"\""role\"":\""([^\""]+)\""", 1, Message)
| where Role == "admin"
| join kind=leftanti (
    AppLogs
    | where Message has "adminApproval"
) on UserId

Recommended Alert Context

  • Severity: High
  • Tactic: Privilege Escalation
  • Technique: Abuse Elevation Control Mechanism
  • Confidence: Medium initially, High after enrichment

Response Actions

  1. Disable the affected user account
  2. Invalidate all active JWT tokens
  3. Review administrative audit logs for misuse
  4. Validate username-to-user-ID mappings
  5. Reset all administrative credentials
  6. Confirm upgrade to version 0.98.0 or later

Remediation & Mitigation

Immediate

  • Upgrade to Apache StreamPipes 0.98.0 or later
  • Revoke all existing authentication tokens
  • Force administrator password resets

Long-Term

  • Enforce immutable user identifiers
  • Validate JWT claims against backend records on each privileged request
  • Prevent username reuse or duplication
  • Improve identity-related audit logging
  • Implement behavioral detection for privilege changes

Official Patch

Final Takeaway

CVE-2025-47411 represents a high-impact identity and access control failure. Although exploitation is technically simple, the consequences are severe due to complete administrative compromise. Any environment running versions 0.97.0 or earlier should be considered immediately exposed until patched and all tokens are revoked.

Aegiron

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