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In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared the user credentials state was only pointed at and when one connection within that association group ended the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.

🗓️ 15 Oct 2024 07:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 2 Views

DCE/RPC association groups share sam ldb handles; ending a connection may leave an invalid session and allow privilege escalation.

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15 Oct 2024 07:00Current
7.2High risk
Vulners AI Score7.2
CVSS 26.5
CVSS 3.18.8
EPSS0.00401
2