Secunia Security Advisory - Jesse Burns and Alex Stamos has reported a security issue in SunnComm MediaMax, which can be exploited by malicious, local users to gain escalated privileges.
18214befb5e8128f032ec1d1210b0d0400a1ea323d4f66fa5649ff5fcec0984e
TITLE:
Sony SunnComm MediaMax DRM Software Insecure Directory Permissions
SECUNIA ADVISORY ID:
SA17933
VERIFY ADVISORY:
http://secunia.com/advisories/17933/
CRITICAL:
Less critical
IMPACT:
Manipulation of data, Privilege escalation
WHERE:
Local system
SOFTWARE:
SunnComm MediaMax 5.x
http://secunia.com/product/6385/
DESCRIPTION:
Jesse Burns and Alex Stamos has reported a security issue in SunnComm
MediaMax, which can be exploited by malicious, local users to gain
escalated privileges.
The security issue is caused due to insecure default directory ACLs
being set on the "SunnComm Shared" directory, which allows "everyone"
full access to the directory. This can be exploited by
non-administrative users to modify the installed files, and
potentially gain escalated privileges by e.g. replacing the MMX.exe
program with a malicious program. The MMX.exe program will be
automatically executed when another user inserts a MediaMax protected
CD.
Changing the directory ACL manually is reportedly not effective as
the insecure permissions will be restored the next time a MediaMax
protected CD is played.
The security issue has been reported in version 5.0.21.0. Prior
versions may also be affected.
SOLUTION:
Update to the fixed version.
http://sonybmg.com/mediamax/
Refer to Sony's advisory for the list of CD titles that include the
MediaMax software.
PROVIDED AND/OR DISCOVERED BY:
Jesse Burns and Alex Stamos, iSEC Partners.
ORIGINAL ADVISORY:
Sony:
http://sonybmg.com/mediamax/
http://www.sonybmg.com/mediamax/titles.html
EFF:
http://www.eff.org/news/archives/2005_12.php#004234
iSEC Partners:
http://www.eff.org/IP/DRM/Sony-BMG/MediaMaxVulnerabilityReport.pdf
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