CVE intelligence and bounded remediation

CVE-2023-3899 — A vulnerability was found in subscription-manager that allows local privilege escalation due to inadequate authorization

High CVSS 7.8

A vulnerability was found in subscription-manager that allows local privilege escalation due to inadequate authorization. The D-Bus interface com.redhat.RHSM1 exposes a significant number of methods to all users that could change the state of the registration. By using the com.redhat.RHSM1.Config.SetAll() method, a low-privileged local user could tamper with the state of the registration, by unregistering the system or by changing the current entitlements. This flaw allows an attacker to set arbitrary configuration directives for /etc/rhsm/rhsm.conf, which can be abused to cause a local privilege escalation to an unconfined root.

Severity
High
CVSS
7.8 (3.1)
Published
2023-08-23
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-285, CWE-863

Affected products

  • redhat / subscription-manager
  • fedoraproject / fedora / 37
  • fedoraproject / fedora / 38
  • redhat / enterprise_linux / 8.0
  • redhat / enterprise_linux / 9.0
  • redhat / enterprise_linux_desktop / 7.0

Showing 6 representative product identities from 58 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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