systemd v233 and earlier fails to safely parse usernames starting with a numeric digit (e.g. "0day"), running the service in question with root privileges rather than the user intended.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-1000082 from the MITRE CVE dictionary dictionary and NIST NVD.
For more information on the impact of numeric usernames in Red Hat Enterprise Linux, please see https://access.redhat.com/solutions/3103631
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.2 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | High |
| User Interaction | Required |
| Scope | Changed |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | systemd | Not affected |
Vulmon