CVE-2021-32647

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Summary

CVECVE-2021-32647
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-06-01 14:15:00 UTC
Updated2022-07-02 20:01:00 UTC
DescriptionEmissary 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: `<constructor>(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.

Risk And Classification

Problem Types: CWE-470

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nsa Emissary 6.4.0 All All All

References

ReferenceSourceLinkTags
emissary/CreatePlaceAction.java at 30c54ef16c6eb6ed09604a929939fb9f66868382 · NationalSecurityAgency/emissary · GitHub MISC github.com
Post-authentication Remote Code Execution (RCE) in emissary:emissary · Advisory · NationalSecurityAgency/emissary · GitHub CONFIRM github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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