Bug 799902 (CVE-2012-1101) - CVE-2012-1101 systemd: Units that failed to load were not cleaned up leading to DoS
Summary: CVE-2012-1101 systemd: Units that failed to load were not cleaned up leading ...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2012-1101
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 680122
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-03-05 11:42 UTC by Jan Lieskovsky
Modified: 2019-09-29 12:50 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-03-05 11:52:26 UTC


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Description Jan Lieskovsky 2012-03-05 11:42:18 UTC
A security flaw was found in the way systemd loaded configuration for non-existent service(s). A local user could use this flaw to create entry in systemd's service list for that service via 'systemctl status non-existent.service', potentially leading to denial of service (failure of login procedure) when the list of previously loaded units reached upper limit.

References:
[1] https://bugzilla.redhat.com/show_bug.cgi?id=680122
[2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=662029
[3] https://bugzilla.novell.com/show_bug.cgi?id=750397
[4] http://seclists.org/oss-sec/2012/q1/537

Upstream patch:
[5] http://cgit.freedesktop.org/systemd/systemd/commit/?id=9a46fc3b9014de1bf0ed1f3004a536b08a19ebb3

Comment 1 Jan Lieskovsky 2012-03-05 11:52:26 UTC
This issue did NOT affect the current versions (systemd-26-16.fc15 and systemd-37-13.fc16 respectively) of the systemd package, as being actually present within Fedora release of 15 and 16.


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