Bug 1468427 (CVE-2017-1000082) - CVE-2017-1000082 systemd: fails to parse usernames that start with digits
Summary: CVE-2017-1000082 systemd: fails to parse usernames that start with digits
Alias: CVE-2017-1000082
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Whiteboard: impact=moderate,public=20170707,repor...
Depends On: 1468430
Blocks: 1467225
TreeView+ depends on / blocked
Reported: 2017-07-07 04:30 UTC by Doran Moppert
Modified: 2019-06-08 22:05 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2017-07-07 04:53:26 UTC

Attachments (Terms of Use)

Description Doran Moppert 2017-07-07 04:30:28 UTC
Systemd version 323 rejects usernames starting with a digit (eg "0day"),
running the service with root privileges even though a corresponding user

Upstream bug:


oss-sec discussion:


Comment 1 Doran Moppert 2017-07-07 04:40:47 UTC
This issue seems to have been introduced since systemd-229.  Neither EL7 nor Fedora 24 is affected - not sure about 231/233.

For an attacker to exploit this they would need to influence the creation of a user and associated unit file on the system.

Comment 2 Doran Moppert 2017-07-07 04:52:25 UTC
Created systemd tracking bugs for this issue:

Affects: fedora-all [bug 1468430]

Comment 3 Doran Moppert 2017-07-10 06:45:23 UTC

For more information on the impact of numeric usernames in Red Hat Enterprise Linux, please see https://access.redhat.com/solutions/3103631

Note You need to log in before you can comment on or make changes to this bug.