CVE-2021-32647

Emissary is a P2P based data-driven workflow engine. Affected versions of Emissary are vulnerable to post-authentication Remote Code Execution (RCE). The [`CreatePlace`](https://github.com/NationalSecurityAgency/emissary/blob/30c54ef16c6eb6ed09604a929939fb9f66868382/src/main/java/emissary/server/mvc/internal/CreatePlaceAction.java#L36) REST endpoint accepts an `sppClassName` parameter which is used to load an arbitrary class. This class is later instantiated using a constructor with the following signature: `(String, String, String)`. An attacker may find a gadget (class) in the application classpath that could be used to achieve Remote Code Execution (RCE) or disrupt the application. Even though the chances to find a gadget (class) that allow arbitrary code execution are low, an attacker can still find gadgets that could potentially crash the application or leak sensitive data. As a work around disable network access to Emissary from untrusted sources.

Link	Resource
https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-ph73-7v9r-wg32	Patch Third Party Advisory
https://github.com/NationalSecurityAgency/emissary/blob/30c54ef16c6eb6ed09604a929939fb9f66868382/src/main/java/emissary/server/mvc/internal/CreatePlaceAction.java#L36	Exploit Third Party Advisory

Configuration 1

cpe:2.3:a:nsa:emissary:6.4.0:*:*:*:*:*:*:*

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Published : 2021-06-01 02:15

Updated : 2022-07-02 08:01

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NVD link : CVE-2021-32647

Mitre link : CVE-2021-32647

No products.

CWE-470

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')