Privilege escalation in [Freedesktop.org] Systemd
CVE-2019-3843
It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to…
EPSS: 0.009 (55.3th percentile) — read the EPSS interpretation.
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.
Affected products
- [Freedesktop.org] Systemd — versions 242
- Netapp Cn1610
- Netapp Cn1610_firmware
- Netapp Hci_management_node
- Netapp Snapprotect
- Netapp Solidfire
- Systemd_project Systemd
- Canonical Ubuntu_linux — versions 16.04, 18.04, 19.10
- Fedoraproject Fedora — versions 30
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST)
- secalert@redhat.com (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2019-3843?
- CVE-2019-3843 is a high-severity vulnerability in [Freedesktop.org] Systemd, classified under Incorrect Privilege Assignment. CVSS score: 7.8/10. Published 2019-04-26.
- How severe is CVE-2019-3843?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2019-3843 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.