CVE intelligence and bounded remediation

CVE-2019-18631 — Centrify Authentication Service security vulnerability

High CVSS 7.8

The Windows component of Centrify Authentication and Privilege Elevation Services 3.4.0, 3.4.1, 3.4.2, 3.4.3, 3.5.0, 3.5.1 (18.8), 3.5.2 (18.11), and 3.6.0 (19.6) does not properly handle an unspecified exception during use of partially trusted assemblies to serialize input data, which allows attackers to execute arbitrary code inside the Centrify process via (1) a crafted application that makes a pipe connection to the process and sends malicious serialized data or (2) a crafted Microsoft Management Console snap-in control file.

Severity
High
CVSS
7.8 (3.1)
Published
2019-11-05
CISA KEV
Not currently listed
Ecosystem
windows/system
Weaknesses
CWE-502

Affected products

  • centrify / authentication_service / 3.4.0
  • centrify / authentication_service / 3.4.1
  • centrify / authentication_service / 3.4.2
  • centrify / authentication_service / 3.4.3
  • centrify / authentication_service / 3.5.0
  • centrify / authentication_service / 3.5.1

Showing 6 representative product identities from 16 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Unsafe deserialization and object reconstruction

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Check exposure

  • Inventory serialization formats accepted from requests, queues, caches, files, cookies, and cross-service messages.
  • Trace whether untrusted input can select classes, types, callbacks, constructors, or object hooks during decoding.
  • Identify signing, schema validation, trust-boundary, and compatibility settings for each decoder.

Remediate safely

  • Replace native object deserialization with a data-only format and explicit schema validation.
  • If replacement is not immediate, use a safe decoder with a minimal type allowlist and disable polymorphic or executable hooks.
  • Update the affected library and add inert tests for unknown types, extra fields, malformed nesting, and unsigned data.

Authoritative sources

Complete CVE record and remediation plan

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