Microsoft Office 365 Conditional Access Policy access control ⚔ [Disputed]

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Office 365. It has been classified as critical. This affects an unknown part of the component Conditional Access Policy. The manipulation leads to access control. This vulnerability is traded as CVE-2022-2077. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. There is ongoing doubt regarding the real existence of this vulnerability. It is suggested to update the configuration settings. Vendor claims that pre-requisites are very high, the feature works as intended, and that configuration settings might mitigate the issue.

Detailsinfo

A vulnerability was found in Microsoft Office 365 (Office Suite Software) (unknown version) and classified as critical. This issue affects an unknown code block of the component Conditional Access Policy. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability.

The bug was discovered 10/21/2021. The weakness was shared 02/01/2022 by Lukas Reiter and Alexander Hagenah as VULN-056667 / Conditional Access Policy Bypass via Session Hijacking in Microsoft O365 as confirmed advisory (GitHub). The advisory is shared at github.com. The identification of this vulnerability is CVE-2022-2077. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The exploit is available at github.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 103 days. During that time the estimated underground price was around $5k-$25k. The real existence of this vulnerability is still doubted at the moment. Vendor claims that pre-requisites are very high, the feature works as intended, and that configuration settings might mitigate the issue.

It is possible to mitigate the problem by applying the configuration setting .

mandiant.com is providing further details. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

Screenshot

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.0
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Config
Status: 🔍

0-Day Time: 🔍

Workaround: docs.microsoft.com

Timelineinfo

10/21/2021 🔍
10/26/2021 +5 days 🔍
02/01/2022 +98 days 🔍
02/01/2022 +0 days 🔍
06/15/2022 +134 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: VULN-056667 / Conditional Access Policy Bypass via Session Hijacking in Microsoft O365
Researcher: Lukas Reiter, Alexander Hagenah
Status: Confirmed
Disputed: 🔍

CVE: CVE-2022-2077 (🔍)
GCVE (CVE): GCVE-0-2022-2077
GCVE (VulDB): GCVE-100-192029
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 02/01/2022 07:46
Updated: 06/15/2022 15:04
Changes: 02/01/2022 07:46 (42), 02/01/2022 07:48 (5), 06/14/2022 07:16 (5), 06/14/2022 07:17 (2), 06/15/2022 15:04 (2)
Complete: 🔍
Cache ID: 216::103

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