1507 – root exploitable login with default PAM installation

Bug 1507 - root exploitable login with default PAM installation

Summary: root exploitable login with default PAM installation

Status:	RESOLVED FIXED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	[OLD] Core system (show other bugs)
Hardware:	x86 Linux

Importance:	High blocker (vote)
Assignee:	Daniel Robbins (RETIRED)

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Depends on:
Blocks:

Reported:	2002-04-03 15:34 UTC by Preston A. Elder
Modified:	2003-02-04 19:42 UTC (History)
CC List:	0 users

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Runtime testing required:	---

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Description Preston A. Elder 2002-04-03 15:34:06 UTC

By default, the /etc/pam.d/system-auth file has 4 entries that reference
/lib/security/pam_pwdb.so.  ALL of these need to be changed to reference
/lib/security/pam_unix.so.

The effect of this bug is that anyone who has a valid password for any user on
the system can login as root either from console by failing to login with that
user ID 3 times, and then on the 4th attempt, succeeding to login.

Please create a new ebuild of PAM that fixes this.

Comment 1 Daniel Robbins (RETIRED) gentoo-dev

2002-04-03 22:16:24 UTC

we have a new shadow that fixes this now.  Apparently pam_pwdb is broken --
wonderful.