Privilege escalation in Windows Print Spooler



Published: 2020-05-12
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2020-1048
CVE-2020-1070
CWE ID CWE-264
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Public exploit code for vulnerability #2 is available.
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Advisory

1) Permissions, Privileges, and Access Controls

Risk: Low

CVSSv3: 7.2 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-1048

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

Exploit availability: Yes [Search exploit]

Description

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

The vulnerability exists due to the Windows Print Spooler service improperly allows arbitrary writing to the file system. A local user can use a specially crafted application to execute arbitrary code on the target system with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7, 8.1, 10, 10 1607, 10 1709, 10 1803, 10 1809, 10 1903, 10 1909, RT 8.1

Windows Server: 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2019 1803, 2019 1903, 2019 1909

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1048

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. However, a fully functional exploit for this vulnerability is available.

2) Permissions, Privileges, and Access Controls

Risk: Low

CVSSv3: 7 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-1070

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

Exploit availability: Yes [Search exploit]

Description

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

The vulnerability exists due to the Windows Print Spooler service improperly allows arbitrary writing to the file system. A local user can use a specially crafted application to execute arbitrary code on the target system with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7, 8.1, 10, 10 1607, 10 1709, 10 1803, 10 1809, 10 1903, 10 1909, RT 8.1

Windows Server: 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2019 1803, 2019 1903, 2019 1909

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1070

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. However, proof of concept for this vulnerability is available.