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Last updated: 9/19/2014 9:52:57 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2011-1823

Original release date: 06/09/2011
Last revised: 04/25/2012
Source: US-CERT/NIST

Overview

The vold volume manager daemon on Android 3.0 and 2.x before 2.3.4 trusts messages that are received from a PF_NETLINK socket, which allows local users to execute arbitrary code and gain root privileges via a negative index that bypasses a maximum-only signed integer check in the DirectVolume::handlePartitionAdded method, which triggers memory corruption, as demonstrated by Gingerbreak.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.2 (HIGH) (AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: MISC
Name: http://androidcommunity.com/gingerbreak-root-for-gingerbread-app-20110421/
External Source: CONFIRM
Name: http://android.git.kernel.org/?p=platform/system/netd.git;a=commit;h=79b579c92afc08ab12c0a5788d61f2dd2934836f
Type: Patch Information
External Source: MISC
Name: http://www.androidpolice.com/2011/05/03/google-patches-gingerbreak-exploit-but-dont-worry-we-still-have-root-for-now/
External Source: MISC
Name: http://xorl.wordpress.com/2011/04/28/android-vold-mpartminors-signedness-issue/
External Source: XF
Name: android-vold-priv-escalation(67977)
External Source: CONFIRM
Name: http://android.git.kernel.org/?p=platform/system/vold.git;a=commit;h=c51920c82463b240e2be0430849837d6fdc5352e
External Source: MISC
Name: http://forum.xda-developers.com/showthread.php?t=1044765
External Source: CONFIRM
Name: http://android.git.kernel.org/?p=platform/system/core.git;a=commit;h=b620a0b1c7ae486e979826200e8e441605b0a5d6
Type: Patch Information
External Source: MISC
Name: http://c-skills.blogspot.com/2011/04/yummy-yummy-gingerbreak.html

Technical Details

Vulnerability Type (View All)