Auth bypass in Fedoraproject Fedora
CVE-2023-3899
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (14.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.000
Affected products
- Fedoraproject Fedora — versions 37, 38
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7 — versions 0:1.24.52-2.el7_9
- Red Hat Enterprise Linux 8 — versions 0:1.28.36-3.el8_8
- Red Hat Enterprise Linux 8.1 Update Services For SAP Solutions — versions 0:1.25.17.1-2.el8_1
- Red Hat Enterprise Linux 8.2 Advanced Update Support — versions 0:1.26.22-2.el8_2
- Red Hat Enterprise Linux 8.2 Telecommunications Update Service — versions 0:1.26.22-2.el8_2
- Red Hat Enterprise Linux 8.2 Update Services For SAP Solutions — versions 0:1.26.22-2.el8_2
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support — versions 0:1.28.13-7.el8_4
- Red Hat Enterprise Linux 8.4 Telecommunications Update Service — versions 0:1.28.13-7.el8_4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2023:4701 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:4702 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:4703 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:4704 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:4705 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:4706 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:4707 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:4708 (vendor-advisory, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2023-3899 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-3899?
- CVE-2023-3899 is a high-severity vulnerability in Fedoraproject Fedora, classified under Improper Authorization. CVSS score: 7.8/10. Published 2023-08-23.
- How severe is CVE-2023-3899?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-3899 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.