Multiple vulnerabilities in Microsoft Windows



Published: 2019-10-09 | Updated: 2019-11-21
Risk Low
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2019-1316
CVE-2019-1320
CVE-2019-1322
CVE-2019-1340
CWE-ID CWE-264
CWE-287
Exploitation vector Local
Public exploit Vulnerability #3 is being exploited in the wild.
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

Updated: 21.11.2019
Added link to PoC for vulnerability #3, updated CVSS score.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU21679

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1316

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 Windows Setup does not properly handle privileges. A local authenticated user can run a specially crafted application and run processes in an elevated context.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 - 10 1903 10.0.18362.116

Windows Server: 2016 10.0.14393.10 - 2019 1903

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1316


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.

2) Improper Authentication

EUVDB-ID: #VU21678

Risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1320

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to Windows improperly handles authentication requests. A local user can run a specially crafted application on the victim system, bypass authentication process and run processes in an elevated context.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 10 1709 10.0.16299.19 - 10 1903 10.0.18362.116

Windows Server: 2019 10.0.17763.1 - 2019 1903

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1320


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.

3) Improper Authentication

EUVDB-ID: #VU21660

Risk: Low

CVSSv3.1: 6.7 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-1322

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes

Description

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

The vulnerability exists due to Windows improperly handles authentication requests. A local user can bypass authentication process and run processes in an elevated context.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 10 1803 10.0.17134.48 - 10 1903 10.0.18362.116

Windows Server: 2019 10.0.17763.1 - 2019 1903

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1322
http://www.exploit-db.com/exploits/47684


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?

Yes. This vulnerability is being exploited in the wild.

4) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU21677

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-2019-1340

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 Windows AppX Deployment Server allows file creation in arbitrary locations. A local authenticated user can run a specially crafted application and take control of an affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1703 10.0.15063.138 - 10 1903 10.0.18362.116

Windows Server: 2019 10.0.17763.1 - 2019 1903

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1340


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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