CVE-2023-3899

Subscription-manager: inadequate authorization of com.redhat.rhsm1 d-bus interface allows local users to modify configuration

publishedCWE-285

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.

Technical severity7.8 highCVSS 3.1 · CNA: redhat

Published2023-08-23Source updated 2026-11-07

Collected2026-11-072 attributed sources

Fixes and workarounds

Workaround

A workaround is to mask rhsm.service using: ~~~ systemctl mask rhsm.service ~~~ When the rhsm.service is masked, then no D-Bus call cannot trigger the service and all D-Bus calls will be terminated with error: "Call failed: Could not activate remote peer." But then all applications using D-Bus API will not work until you unmask the service using: "systemctl unmask rhsm.service"

Source: CNA: redhat

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
Red Hat Enterprise Linux 7 Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.24.52-2.el7_9; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8 Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.28.36-3.el8_8; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.25.17.1-2.el8_1; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.2 Advanced Update Support Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.26.22-2.el8_2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.2 Telecommunications Update Service Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.26.22-2.el8_2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.26.22-2.el8_2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.28.13-7.el8_4; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.4 Telecommunications Update Service Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.28.13-7.el8_4; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.28.13-7.el8_4; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.28.29.1-2.el8_6; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9 Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.29.33.1-2.el9_2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	≥ 0:1.29.26.2-2.el9_0; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 6 Red Hat `subscription-manager` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unaffected	CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 7.8 high	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`	CNA: redhat

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://access.redhat.com/errata/RHSA-2023:4701CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4702CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4703CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4704CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4705CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4706CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4707CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4708CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-3899CNA: redhat · vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2225407CNA: redhat · issue-tracking, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4701ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:4702ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:4703ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:4704ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:4705ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:4706ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:4707ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/errata/RHSA-2023:4708ADP: CVE · vendor-advisory, x_refsource_REDHAT, x_transferred
https://access.redhat.com/security/cve/CVE-2023-3899ADP: CVE · vdb-entry, x_refsource_REDHAT, x_transferred
https://bugzilla.redhat.com/show_bug.cgi?id=2225407ADP: CVE · issue-tracking, x_refsource_REDHAT, x_transferred
https://lists.fedoraproject.org/archives/list/[email protected]/message/FJHKSBBZRDFOBNDU35FUKMYQIQYT6UJQ/ADP: CVE · x_transferred
https://lists.fedoraproject.org/archives/list/[email protected]/message/ZDIHGNLS3TZVX7X2F735OKI4KXPY4AH6/ADP: CVE · x_transferred

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