Microsoft Windows up to Server 2016 RRAS input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows up to Server 2016. It has been declared as critical. Impacted is an unknown function of the component RRAS. Such manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2017-11885. The attack can be launched remotely. Moreover, an exploit is present. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows up to Server 2016 (Operating System). Affected by this issue is some unknown processing of the component RRAS. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2008 SP2 and R2 SP1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703 and 1709, Windows Server 2016 and Windows Server, version 1709 allow a remote code execution vulnerability due to the way the Routing and Remote Access service handles requests, aka "Windows RRAS Service Remote Code Execution Vulnerability".

The bug was discovered 12/12/2017. The weakness was disclosed 12/12/2017 as KB4053578 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2017-11885 since 07/31/2017. The exploitation is known to be difficult. The attack may be launched remotely. Additional levels of successful authentication are required for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A remote code execution vulnerability exists in RPC if the server has Routing and Remote Access enabled. An attacker who successfully exploited this vulnerability could execute code on the target system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 105184 (Windows 7 and Windows Server 2008 R2 December 2017 Security Updates), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91415 (Microsoft Windows Security Update December 2017).

Applying the patch KB4053578 is able to eliminate this problem. The bugfix is ready for download at catalog.update.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (44616), Tenable (105184) and SecurityFocus (BID 102055†). The entries VDB-110523, VDB-110524, VDB-110525 and VDB-110527 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.6
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 6.6
Vendor Vector (Microsoft): 🔍

NVD Base Score: 6.6
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105184
Nessus Name: Windows 7 and Windows Server 2008 R2 December 2017 Security Updates
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 67339
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4054519)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: windows_smb_rras
Saint Name: Windows RRAS Service Remote Code Execution Vulnerability

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: KB4053578
Suricata ID: 2025824
Suricata Class: 🔍
Suricata Message: 🔍

Timelineinfo

07/31/2017 🔍
12/12/2017 +134 days 🔍
12/12/2017 +0 days 🔍
12/12/2017 +0 days 🔍
12/12/2017 +0 days 🔍
12/12/2017 +0 days 🔍
12/12/2017 +0 days 🔍
12/13/2017 +1 days 🔍
01/26/2021 +1140 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: KB4053578
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11885 (🔍)
GCVE (CVE): GCVE-0-2017-11885
GCVE (VulDB): GCVE-100-110522

OVAL: 🔍

SecurityFocus: 102055 - Microsoft Windows RPC CVE-2017-11885 Remote Code Execution Vulnerability
SecurityTracker: 1039987

scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍

Entryinfo

Created: 12/13/2017 07:44
Updated: 01/26/2021 18:46
Changes: 12/13/2017 07:44 (90), 12/14/2019 07:54 (15), 01/26/2021 18:46 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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