VulDB AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

A-No limiting factors

AC-No Race Condition

C-No limiting factors

I-No limiting factors

VulDB CWE-284

CWE-284 / Outside of 1003

** DISPUTED ** A vulnerability was found in Microsoft O365 and classified as critical. This issue affects the Conditional Access Policy which leads to improper access controls. By default the policy is not verified for every request. The attack may be initiated remotely. Exploit details have been disclosed to the public. It is recommended to change the configuration settings. NOTE: Vendor claims that pre-requisites are very high, the feature works as intended, and that configuration settings might mitigate the issue.

** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.

https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-continuous-access-evaluation [Patch, Vendor Advisory]

https://github.com/sixgroup-security/Advisories/tree/main/20211209_Conditional-Access-Bypass-via-Session-Hijacking-in-Microsoft-O365 [Exploit, Third Party Advisory]

https://vuldb.com/?id.192029 [Third Party Advisory]

https://www.mandiant.com/resources/russian-targeting-gov-business [Third Party Advisory]