What is CVE-2021-32634?

CVE-2021-32634 is a high-severity vulnerability in Nationalsecurityagency Emissary, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2021-05-21.

How severe is CVE-2021-32634?

High severity. CVSS v3 base score is 7.2 out of 10.

Deserialization in Nationalsecurityagency Emissary

CVE-2021-32634

Emissary is a distributed, peer-to-peer, data-driven workflow framework. Emissary 6.4.0 is vulnerable to Unsafe Deserialization of post-authenticated requests to the [`WorkSpaceClientEnqueue.action`](https://github.com/NationalSecurityAgency/emissary/blob/30c54ef16c6eb6ed09604a929939fb9f66868382/src/main/java/emissary/server/mvc/internal/WorkSpaceClientEnqueueAction.java) REST endpoint. This issue may lead to post-auth Remote Code Execution. This issue has been patched in version 6.5.0. As a workaround, one can disable network access to Emissary from untrusted sources.

Vulnerability class: Insecure Deserialization

EPSS: 0.013 (67.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H.

Affected products

Nationalsecurityagency Emissary — versions < 6.5.0
Nsa Emissary — versions 6.4.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-32634?: CVE-2021-32634 is a high-severity vulnerability in Nationalsecurityagency Emissary, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2021-05-21.
How severe is CVE-2021-32634?: High severity. CVSS v3 base score is 7.2 out of 10.