PT-2021-19823 · Emissary · Emissary

Pwntester · Published 2021-07-02 · Updated 2021-07-06 · CVE-2021-32639

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Emissary versions 6.4.0 through 6.4.0

Description Emissary is a P2P-based, data-driven workflow engine. The issue affects the RegisterPeerAction endpoint and the AddChildDirectoryAction endpoint, making them vulnerable to Server-Side Request Forgery (SSRF), which may lead to credential leaks.

Recommendations For Emissary version 6.4.0, update to version 7.0 to resolve the issue. As a temporary workaround, consider disabling network access to Emissary from untrusted sources.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2021-32639

GHSA-2P8J-2RF3-H4XR

Affected Products

Emissary

References · 7

• 🔥 https://github.com/NationalSecurityAgency/emissary/blob/30c54ef16c6eb6ed09604a929939fb9f66868382/src/main/java/emissary/server/mvc/internal/AddChildDirectoryAction.java · Exploit
• 🔥 https://github.com/NationalSecurityAgency/emissary/blob/30c54ef16c6eb6ed09604a929939fb9f66868382/src/main/java/emissary/server/mvc/internal/RegisterPeerAction.java · Exploit
• 🔥 https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-2p8j-2rf3-h4xr · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-32639 · Security Note
• https://osv.dev/vulnerability/CVE-2021-32639 · Vendor Advisory
• https://t.me/cvenotify/17004 · Telegram Post
• https://t.me/cvenotify/17172 · Telegram Post