Bug 144652 - [PATCH] pwd_mkdb(8) copies comments to /etc/passwd
Summary: [PATCH] pwd_mkdb(8) copies comments to /etc/passwd
Status: Open
Alias: None
Product: Base System
Classification: Unclassified
Component: bin (show other bugs)
Version: 7.2-STABLE
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-bugs (Nobody)
Depends on:
Reported: 2010-03-11 11:30 UTC by Andre.Albsmeier
Modified: 2018-06-26 06:00 UTC (History)
1 user (show)

See Also:

file.diff (664 bytes, patch)
2010-03-11 11:30 UTC, Andre.Albsmeier
no flags Details | Diff

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Description Andre.Albsmeier 2010-03-11 11:30:02 UTC
pwd_mkdb copies comments from /etc/master.passwd to /etc/passwd.
Since /etc/passwd is world readable this could reveal encrypted,
although currently not active, passwords from entries that have
been commented out for some reason.

Fix: A solution would be to not copy comments to /etc/passwd:
Add a user with password to /etc/master.passwd.
vipw and comment out the entry by adding a # in front of it.
As normal user: grep '#' /etc/passwd

The result looks something like this:

# $FreeBSD: src/etc/master.passwd,v 1.40 2005/06/06 20:19:56 brooks Exp $
Comment 1 Eitan Adler freebsd_committer freebsd_triage 2017-12-31 08:01:24 UTC
For bugs matching the following criteria:

Status: In Progress Changed: (is less than) 2014-06-01

Reset to default assignee and clear in-progress tags.

Mail being skipped
Comment 2 Thanos 2018-06-26 06:00:14 UTC