Multiple vulnerabilities in Microsoft Windows Update Client



Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2019-1323
CVE-2019-1336
CVE-2019-1337
CWE-ID CWE-264
CWE-125
CWE-200
Exploitation vector Local
Public exploit Public exploit code for vulnerability #3 is available.
Vulnerable software
 Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU21676

Risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1323

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 Update Client 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 1809 10.0.17763.1 - 10 1903 10.0.18362.116

Windows Server: 2019 10.0.17763.1 - 2019 1903

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1323


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) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU21675

Risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1336

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 Update Client 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 1809 10.0.17763.1 - 10 1903 10.0.18362.116

Windows Server: 2019 10.0.17763.1 - 2019 1903

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1336


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) Out-of-bounds read

EUVDB-ID: #VU21661

Risk: Low

CVSSv4.0: 5.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-1337

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: Yes

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to Windows Update Client fails to properly handle objects in memory. A local authenticated user can use a specially crafted application to trigger out-of-bounds read error and read contents of an elevated process.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 10 1809 10.0.17763.1 - 10 1903 10.0.18362.116

Windows Server: 2019 10.0.17763.1 - 2019 1903

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1337


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.



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