apache struts CVE-2017-9805 vulnerability in Apache and Other Products
Published on September 15, 2017

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The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.

Vendor Advisory NVD

Known Exploited Vulnerability

This Apache Struts Multiple Versions Remote Code Execution Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 contains a vulnerability which can lead to Remote Code Execution.

The following remediation steps are recommended / required by May 3, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2017-9805 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Marshaling, Unmarshaling Vulnerability?

The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

CVE-2017-9805 has been classified to as a Marshaling, Unmarshaling vulnerability or weakness.


Products Associated with CVE-2017-9805

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Affected Versions

Apache Software Foundation Apache Struts Version Apache Struts before 2.3.34 and 2.5.x before 2.5.13 is affected by CVE-2017-9805

Exploit Probability

EPSS
94.32%
Percentile
99.95%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.