Privilege escalation in Microsoft Office

1) Link following

EUVDB-ID: #VU87462

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26199

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: No

Description

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

The vulnerability exists due to insecure link following within the Office Performance Monitor executable. A local user can create a symbolic link to a critical file on the system and delete arbitrary files.

Successful exploitation of the vulnerability may allow arbitrary code execution with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft 365 Apps for Enterprise: before 16.0.17328.20184

External links

http://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26199
http://www.zerodayinitiative.com/advisories/ZDI-24-294/

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.

Is there known malware, which exploits this vulnerability?

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