Vulnerability Monitor

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CVE-2020-1938


When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.


Published

2020-02-24T22:15:12.057

Last Modified

2025-03-28T17:15:49.427

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

6.4

Weaknesses
  • Type: Primary
    NVD-CWE-Other

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application apache geode 1.12.0 Yes
Application apache tomcat < 7.0.100 Yes
Application apache tomcat < 8.5.51 Yes
Application apache tomcat < 9.0.31 Yes
Operating System fedoraproject fedora 30 Yes
Operating System fedoraproject fedora 31 Yes
Operating System fedoraproject fedora 32 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_element_manager 8.1.1 Yes
Application oracle communications_element_manager 8.2.0 Yes
Application oracle communications_element_manager 8.2.1 Yes
Application oracle communications_instant_messaging_server 10.0.1.4.0 Yes
Application oracle health_sciences_empirica_inspections 1.0.1.2 Yes
Application oracle health_sciences_empirica_signal 7.3.3 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 mysql_enterprise_monitor ≤ 4.0.12 Yes
Application oracle mysql_enterprise_monitor ≤ 8.0.20 Yes
Application oracle siebel_ui_framework ≤ 20.5 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
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
Application blackberry good_control ≤ 5.2.58.38 Yes
Application blackberry workspaces_server 7.0.1 Yes
Application blackberry workspaces_server 7.1.2 Yes
Application blackberry workspaces_server 8.1.0 Yes
Application blackberry workspaces_server 9.0 Yes
Application netapp data_availability_services - Yes
Application netapp oncommand_system_manager ≤ 3.1.3 Yes

References