CVE-2017-1000082

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-07-07 · updated 2026-06-17
Weakness: CWE-269

Description

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.

Affected products

systemd: from 229 before 234 — fixed in 234

How to fix

Upgrade to a fixed version: systemd 234. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2017/07/02/1
http://www.securityfocus.com/bid/99507
http://www.securitytracker.com/id/1038839
https://github.com/systemd/systemd/issues/6237
http://www.openwall.com/lists/oss-security/2017/07/02/1
http://www.securityfocus.com/bid/99507
http://www.securitytracker.com/id/1038839
https://github.com/systemd/systemd/issues/6237

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