Microsoft ASP.NET Core 2.0 redirect

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft ASP.NET Core 2.0. It has been classified as critical. This vulnerability affects unknown code. This manipulation causes redirect. This vulnerability is tracked as CVE-2017-11879. The attack is possible to be carried out remotely. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as critical was found in Microsoft ASP.NET Core 2.0. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a redirect vulnerability. The CWE definition for the vulnerability is CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka "ASP.NET Core Elevation Of Privilege Vulnerability".

The bug was discovered 11/14/2017. The weakness was disclosed 11/14/2017 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-11879 since 07/31/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1204.001 according to MITRE ATT&CK. The advisory points out:

An open redirect vulnerability exists in ASP.NET Core that could lead to elevation of privilege. To exploit the vulnerability, an attacker could send a link that has a specially crafted URL, and convince the user to click the link.

The vulnerability scanner Nessus provides a plugin with the ID 104665 (Security Update ASP .NET Core September 2017), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l.

Applying a patch 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 Tenable (104665) and SecurityFocus (BID 101713†). The entry VDB-109359 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104665
Nessus Name: Security Update ASP .NET Core September 2017
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 860730
OpenVAS Name: domain + \\ + usrname
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: catalog.update.microsoft.com

Timelineinfo

07/31/2017 🔍
11/14/2017 +106 days 🔍
11/14/2017 +0 days 🔍
11/14/2017 +0 days 🔍
11/14/2017 +0 days 🔍
11/14/2017 +0 days 🔍
11/15/2017 +1 days 🔍
11/17/2017 +2 days 🔍
01/23/2021 +1163 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Kavin Chalet
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-11879 (🔍)
GCVE (CVE): GCVE-0-2017-11879
GCVE (VulDB): GCVE-100-109387
SecurityFocus: 101713 - Microsoft ASP.NET Core CVE-2017-11879 Open Redirection Vulnerability
SecurityTracker: 1039793

See also: 🔍

Entryinfo

Created: 11/15/2017 11:02
Updated: 01/23/2021 16:55
Changes: 11/15/2017 11:02 (74), 12/06/2019 13:07 (5), 01/23/2021 16:49 (3), 01/23/2021 16:55 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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