Vulnerability CVE-2012-6422
Published: 2012-12-17   Modified: 2012-12-18

Description:
The kernel in Samsung Galaxy S2, Galaxy Note 2, MEIZU MX, and possibly other Android devices, when running an Exynos 4210 or 4412 processor, uses weak permissions (0666) for /dev/exynos-mem, which allows attackers to read or write arbitrary physical memory and gain privileges via a crafted application, as demonstrated by ExynosAbuse.

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9.3/10
10/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Samsung -> Galaxy note 
Samsung -> Galaxy s 
Samsung -> Galaxy note 2 
Samsung -> Galaxy s2 
Meizu -> MX 

 References:
http://www.securityweek.com/new-vulnerability-exposed-samsungs-android-devices
http://www.sammobile.com/2012/12/16/major-vulnerability-found-on-exynos-4-devices/
http://project-voodoo.org/articles/instant-fix-app-for-exynos-mem-abuse-vulnerability-no-root-required-reversible
http://osvdb.org/88467
http://forum.xda-developers.com/showthread.php?t=2051290
http://forum.xda-developers.com/showthread.php?p=35469999
http://arstechnica.com/security/2012/12/developer-warns-of-critical-vulnerability-in-many-samsung-smartphones/
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