CVE-2011-1823 on CISA KEV

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

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• android.git.kernel.org — http://android.git.kernel.org/?p=platform/system/netd.git%3Ba=commit%3Bh=79b579c…
• android.git.kernel.org — http://android.git.kernel.org/?p=platform/system/core.git%3Ba=commit%3Bh=b620a0b…
• c-skills.blogspot.com — http://c-skills.blogspot.com/2011/04/yummy-yummy-gingerbreak.html
• androidcommunity.com — http://androidcommunity.com/gingerbreak-root-for-gingerbread-app-20110421/
• android.git.kernel.org — http://android.git.kernel.org/?p=platform/system/vold.git%3Ba=commit%3Bh=c51920c…
• xorl.wordpress.com — http://xorl.wordpress.com/2011/04/28/android-vold-mpartminors-signedness-issue/
• exchange.xforce.ibmcloud.com — https://exchange.xforce.ibmcloud.com/vulnerabilities/67977
• www.androidpolice.com — http://www.androidpolice.com/2011/05/03/google-patches-gingerbreak-exploit-but-d…
• forum.xda-developers.com — http://forum.xda-developers.com/showthread.php?t=1044765

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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