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Vulnerability in Apache Struts Could Allow for Remote Code Execution

MS-ISAC ADVISORY NUMBER:

2017-080

DATE(S) ISSUED:

09/06/2017

OVERVIEW:

A vulnerability has been discovered for Apache Software Foundation Struts version 2 which could allow for remote code execution. Apache Struts is an open source framework used for building Java web applications. Successful exploitation of this vulnerability could allow for remote code execution in the context of the affected application. Depending on the privileges associated with the application, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

THREAT INTELLIGENCE:

Exploit code for CVE-2017-9805 is available and being actively used in the wild.

SYSTEMS AFFECTED:

  • Apache Struts versions 2.5 to 2.5.12
  • MySQL Enterprise Monitor, versions 3.2.8.2223 and prior
  • MySQL Enterprise Monitor, versions 3.3.4.3247 and prior
  • MySQL Enterprise Monitor, versions 3.4.2.4181 and prior
  • WebLogic Server, versions 10.3.6.0, 12.1.3.0, 12.2.1.0, 12.2.1.1, 12.2.1.2, 12.2.1.3
  • Oracle Communications Policy Management, versions 11.5, 12.x
  • Oracle FLEXCUBE Private Banking, versions 2.0, 2.1, 2.2, 3.0, 12.0, 12.0.1, 12.0.2, 12.0.3, 12.1
  • Oracle Financial Services Analytical Applications Infrastructure, versions 7.2, 7.3
  • Oracle Financial Services Analytical Applications Reconciliation Framework, versions 3.5, 3.5.1, 8.0.0 to 8.0.4
  • Oracle Financial Services Asset Liability Management, versions 6.0.0, 6.1.0, 6.1.1, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5
  • Oracle Financial Services Basel Regulatory Capital Basic, versions 8.0.0 to 8.0.4
  • Oracle Financial Services Basel Regulatory Capital Internal Ratings Based Approach, versions 8.0.0 to 8.0.4
  • Oracle Financial Services Data Foundation, versions 7.3.0, 7.4.0, 8.0.0 to 8.0.5
  • Oracle Financial Services Data Integration Hub, versions 8.0.1 to 8.0.4
  • Oracle Financial Services Enterprise Financial Performance Analytics, versions 8.0.0 to 8.0.5
  • Oracle Financial Services Funds Transfer Pricing, versions 6.0.0, 6.1.0, 6.1.1, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5
  • Oracle Financial Services Hedge Management and IFRS Valuations, versions 6.1.1, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5
  • Oracle Financial Services ICAAP Analytics, version 8.0
  • Oracle Financial Services Institutional Performance Analytics, versions 8.0.0 to 8.0.5
  • Oracle Financial Services Liquidity Risk Management, versions 8.0.1, 8.0.2, 8.0.4
  • Oracle Financial Services Loan Loss Forecasting and Provisioning, versions 1.5.0, 1.5.1, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5
  • Oracle Financial Services Pricing Management, Transfer Pricing Component / Oracle Financial Services Price Creation and Discovery, versions 8.0.0 to 8.0.5
  • Oracle Financial Services Profitability Management, versions 6.0.0, 6.1.0, 6.1.1, 8.0.1, 8.0.2, 8.0.3, 8.0.4, 8.0.5
  • Oracle Financial Services Retail Customer Analytics, versions 8.0.0 to 8.0.5
  • Oracle Financial Services Retail Performance Analytics, versions 8.0.0 to 8.0.5
  • Oracle Insurance Data Foundation, versions 8.0.0 to 8.0.5
  • Oracle Insurance Performance Insight for General Insurance, version 8.0
  • Oracle Retail XBRi Loss Prevention, versions 10.0.1, 10.5.0, 10.6.0, 10.7.0, 10.8.0, 10.8.1
  • Siebel Applications, versions 6.1, 6.2, 7.1
  • Acrobat 2017 Acrobat Reader 2017 versions 2017.008.30051 and prior for Windows and Macintosh

RISK:

Government:
  • Large and medium government entities: HIGH
  • Small government entities: MEDIUM
Businesses:
  • Large and medium business entities: HIGH
  • Small business entities: MEDIUM
Home Users:
N/A

TECHNICAL SUMMARY:

A vulnerability has been discovered in Apache Struts which could allow for remote code execution. This vulnerability exists because the REST Plugin is using a XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to remote code execution when deserializing XML payloads.

Successful exploitation of this vulnerability could allow for remote code execution in the context of the application. Depending on the privileges associated with the application, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

RECOMENDATIONS:

We recommend the following actions be taken:

  • Upgrade to the latest version of Apache Struts, after appropriate testing.
  • Verify no unauthorized system modifications have occurred on system before applying the patch.
  • Frequently validate type and content of uploaded data.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • September 25 – UPDATED RECOMMENDATIONS:
  • Apply patches provided by Oracle to vulnerable systems immediately after appropriate testing.

REFERENCES:

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