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[ CVE-2011-1823 · Published 9 Jun 2011 ]

Android OS Privilege Escalation Vulnerability

Exploited · CISA KEV CVSS 7.8 EPSS 41%No fix listed yet

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-09-08
  • EPSS: 41% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

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.

CISA: The vold volume manager daemon in Android kernel trusts messages from a PF_NETLINK socket, which allows an attacker to execute code and gain root privileges. This vulnerability is associated with GingerBreak and Exploit.AndroidOS.Lotoor.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 29 Sep 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References