Privilege escalation in Microsoft PsExec



Published: 2021-02-09
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-1733
CWE ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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PsExec
Web applications / Modules and components for CMS

Vendor Microsoft

Security Advisory

This security advisory describes one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

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] [PCI]

CVE-ID: CVE-2021-1733

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 application does not properly impose security restrictions in PsExec, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PsExec: All versions

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1733

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.



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