Bug 664082 (CVE-2010-4661)

Summary: CVE-2010-4661 udisks: arbitrary Linux kernel loading flaw
Product: [Other] Security Response Reporter: Vincent Danen <vdanen>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: mclasen, security-response-team
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
URL: https://bugs.freedesktop.org/show_bug.cgi?id=32232
Whiteboard: public=20101208,reported=20101207,source=vendor-sec,impact=low,cvss2=4.6/AV:L/AC:L/Au:N/C:P/I:P/A:P,fedora-all/udisks=affected,rhel-6/udisks=defer
Fixed In Version: udisks 1.0.3 Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 679859    
Bug Blocks:    

Description Vincent Danen 2010-12-17 18:36:20 EST
Sebastian Krahmer reported that the udisks service (via D-BUS) could be used to load arbitrary Linux kernel modules.  Since "mount -t $NAME" is called, this also triggers a "modprobe -q -- $NAME" which will load the Linux kernel module from /lib/modules/.

The upstream bug report is: https://bugs.freedesktop.org/show_bug.cgi?id=32232 and no upstream fix has been made as of yet, although the upstream bug report has a few suggestions on how to correct this.
Comment 6 Vincent Danen 2011-01-31 14:21:20 EST
This issue can only be exploited by users who are logged in locally and in an active session.  Attempting the same via remote (i.e. via ssh) fails with:

Error org.freedesktop.UDisks.Error.PermissionDenied: Not Authorized
Comment 7 Eugene Teo (Security Response) 2011-02-23 03:16:02 EST
Comment 8 Vincent Danen 2011-02-23 12:41:54 EST
This has been assigned the name CVE-2010-4661
Comment 9 Vincent Danen 2011-02-23 12:43:11 EST
Created udisks tracking bugs for this issue

Affects: fedora-all [bug 679859]
Comment 10 Vincent Danen 2011-02-23 12:45:06 EST

The Red Hat Security Response Team has rated this issue as having low security impact, a future update to Red Hat Enterprise Linux 6 may address this flaw.  This issue did not affect Red Hat Enterprise Linux 4 or 5.
Comment 11 Vincent Danen 2012-08-16 14:05:14 EDT
Upstream patch:


And fixed in upstream 1.0.3.  Current Fedora releases have 1.0.4 so they have been addressed.