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CVE-2023-3899— Subscription-manager: inadequate authorization of com.redhat.rhsm1 d-bus interface allows local users to modify configuration

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 7
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Subscription-Manager是中国季悠然（youranreus）个人开发者的一个订阅管理系统。 Subscription-Manager 存在安全漏洞，该漏洞源于D-Bus 接口 com.redhat.RHSM1 向所有用户公开了大量可以更改注册状态的方法，通过使用 com.redhat.RHSM1.Config.SetAll() 方法，低权限本地用户可以通过注销系统或更改当前权限来篡改注册状态，攻击者利用该漏洞可以为 /etc/rhsm/rhsm.conf 设置任意配置指令，导致本地权限升级

CVSS 7.8 · High EPSS 0.24% · P14
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I. Basic Information for CVE-2023-3899

Vulnerability Information
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Vulnerability Title
Subscription-manager: inadequate authorization of com.redhat.rhsm1 d-bus interface allows local users to modify configuration
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Subscription-Manager 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Subscription-Manager是中国季悠然（youranreus）个人开发者的一个订阅管理系统。 Subscription-Manager 存在安全漏洞，该漏洞源于D-Bus 接口 com.redhat.RHSM1 向所有用户公开了大量可以更改注册状态的方法，通过使用 com.redhat.RHSM1.Config.SetAll() 方法，低权限本地用户可以通过注销系统或更改当前权限来篡改注册状态，攻击者利用该漏洞可以为 /etc/rhsm/rhsm.conf 设置任意配置指令，导致本地权限升级
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 7 0:1.24.52-2.el7_9 ~ * cpe:/o:redhat:enterprise_linux:7::workstation
Red Hat Red Hat Enterprise Linux 8 0:1.28.36-3.el8_8 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:1.28.36-3.el8_8 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions 0:1.25.17.1-2.el8_1 ~ * cpe:/a:redhat:rhel_e4s:8.1::appstream
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:1.26.22-2.el8_2 ~ * cpe:/a:redhat:rhel_e4s:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service 0:1.26.22-2.el8_2 ~ * cpe:/a:redhat:rhel_e4s:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions 0:1.26.22-2.el8_2 ~ * cpe:/a:redhat:rhel_e4s:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:1.28.13-7.el8_4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service 0:1.28.13-7.el8_4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions 0:1.28.13-7.el8_4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support 0:1.28.29.1-2.el8_6 ~ * cpe:/o:redhat:rhel_eus:8.6::baseos
Red Hat Red Hat Enterprise Linux 9 0:1.29.33.1-2.el9_2 ~ * cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support 0:1.29.26.2-2.el9_0 ~ * cpe:/o:redhat:rhel_eus:9.0::baseos
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6

II. Public POCs for CVE-2023-3899

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III. Intelligence Information for CVE-2023-3899

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Vendor Advisories for CVE-2023-3899 (10)

Mailing List Discussions for CVE-2023-3899 (2)

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 7
Same vendor: Red Hat
Same weakness: CWE-285

V. Comments for CVE-2023-3899

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