Information disclosure in Windows TCP/IP stack implementation



Published: 2019-04-10
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-0688
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
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 one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU18173

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-0688

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access so to sensitive information.

The vulnerability exists due to improper validation of fragmented IP packets within the Windows TCP/IP stack. A remote attacker can send specially crafted fragmented IP packets to the affected system and gain access to sensitive information, such as resource ids, sas tokens, user properties, etc.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 8.1 - 10 1809

Windows Server: 2012 - 2019 1803

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0688


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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