Microsoft Office/Project Markup File origin validation

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CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

A vulnerability was found in Microsoft Office and Project (Office Suite Software) (affected version unknown). It has been declared as critical. Affected by this vulnerability is an unknown code of the component Markup File Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-346. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A remote code execution vulnerability exists in Microsoft Project software when the software fails to check the source markup of a file, aka 'Microsoft Project Remote Code Execution Vulnerability'.

The weakness was presented 07/14/2020 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release was coordinated in cooperation with Microsoft. This vulnerability is known as CVE-2020-1449 since 11/04/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/29/2020). The advisory points out:

A remote code execution vulnerability exists in Microsoft Project software when the software fails to check the source markup of a file. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

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VulDB Base Score: 🔒
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VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-346
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Timelineinfoedit

11/04/2019 CVE assigned
07/14/2020 +253 days Advisory disclosed
07/14/2020 +0 days Countermeasure disclosed
07/15/2020 +1 days VulDB entry created
10/29/2020 +106 days VulDB last update

Sourcesinfoedit

Vendor: https://www.microsoft.com/

Advisory: portal.msrc.microsoft.com
Status: Confirmed
Coordinated: 🔒

CVE: CVE-2020-1449 (🔒)

Entryinfoedit

Created: 07/15/2020 09:16 AM
Updated: 10/29/2020 04:23 PM
Changes: (1) source_cve_assigned
Complete: 🔍

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