Privilege escalation in Microsoft OneDrive for Windows



Published: 2020-04-14
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-0935
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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OneDrive for Windows
Client/Desktop applications / Software for archiving

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU26879

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0935

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the OneDrive for Windows Desktop application improperly handles symbolic links. A local user can create a malicious application, launch it on the system and overwrite a targeted file leading to an elevated status.

To exploit this vulnerability, an attacker would first have to log on to the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OneDrive for Windows: All versions


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0935

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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