Vulnerability Monitor

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CVE-2020-9484


When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.0, requiring local system access to exploit but requires specific conditions to be met without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 26 products from apache, from debian, from opensuse and 23 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2020-05-20T19:15:09.257

Last Modified

2024-11-21T05:40:44.420

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.0 (HIGH)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: LOCAL
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

3.4

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-502

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application apache tomcat < 7.0.108 Yes
Application apache tomcat < 8.5.63 Yes
Application apache tomcat < 9.0.43 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 9.0.0 Yes
Application apache tomcat 10.0.0 Yes
Application apache tomcat 10.0.0 Yes
Application apache tomcat 10.0.0 Yes
Application apache tomcat 10.0.0 Yes
Operating System debian debian_linux 8.0 Yes
Operating System debian debian_linux 9.0 Yes
Operating System debian debian_linux 10.0 Yes
Operating System opensuse leap 15.1 Yes
Operating System fedoraproject fedora 31 Yes
Operating System fedoraproject fedora 32 Yes
Operating System canonical ubuntu_linux 16.04 Yes
Operating System canonical ubuntu_linux 20.04 Yes
Application oracle agile_engineering_data_management 6.2.1.0 Yes
Application oracle agile_plm 9.3.3 Yes
Application oracle agile_plm 9.3.5 Yes
Application oracle agile_plm 9.3.6 Yes
Application oracle communications_cloud_native_core_binding_support_function 1.10.0 Yes
Application oracle communications_cloud_native_core_policy 1.14.0 Yes
Application oracle communications_diameter_signaling_router ≤ 8.4.0.5 Yes
Application oracle communications_element_manager ≤ 8.2.2 Yes
Application oracle communications_instant_messaging_server 10.0.1.4.0 Yes
Application oracle communications_session_report_manager ≤ 8.2.2 Yes
Application oracle communications_session_route_manager ≤ 8.2.2 Yes
Application oracle database 12.2.0.1 Yes
Application oracle database 19c Yes
Application oracle database 21c Yes
Application oracle fmw_platform 12.2.1.3.0 Yes
Application oracle fmw_platform 12.2.1.4.0 Yes
Application oracle hospitality_guest_access 4.2.0 Yes
Application oracle hospitality_guest_access 4.2.1 Yes
Application oracle instantis_enterprisetrack ≤ 17.3 Yes
Application oracle managed_file_transfer 12.2.1.3.0 Yes
Application oracle managed_file_transfer 12.2.1.4.0 Yes
Application oracle mysql_enterprise_monitor ≤ 8.0.21 Yes
Application oracle retail_order_broker 15.0 Yes
Application oracle siebel_apps_-_marketing ≤ 21.9 Yes
Application oracle siebel_ui_framework ≤ 20.12 Yes
Application oracle transportation_management 6.3.7 Yes
Application oracle workload_manager 12.2.0.1 Yes
Application oracle workload_manager 18c Yes
Application oracle workload_manager 19c Yes
Application mcafee epolicy_orchestrator 5.9.0 Yes
Application mcafee epolicy_orchestrator 5.9.1 Yes
Application mcafee epolicy_orchestrator 5.10.0 Yes
Application mcafee epolicy_orchestrator 5.10.0 Yes
Application mcafee epolicy_orchestrator 5.10.0 Yes
Application mcafee epolicy_orchestrator 5.10.0 Yes

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For apache's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.