Microsoft Edge Content Security Policy access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$5k-$25k0.00

A vulnerability was found in Microsoft Edge (Web Browser) (unknown version). It has been classified as critical. This affects an unknown code block of the component Content Security Policy. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability exists in Microsoft Edge when the Edge Content Security Policy (CSP) fails to properly validate certain specially crafted documents. An attacker could trick a user into loading a web page with malicious content, aka "Microsoft Edge Security Feature Bypass Vulnerability."

The bug was discovered 04/11/2017. The weakness was shared 04/11/2017 with Microsoft (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2017-0203 since 09/09/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/28/2022). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 99282 (KB4015219: Windows 10 Version 1511 April 2017 Cumulative Update), 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 91354 (Microsoft Edge Security Update for April 2017).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99282) and SecurityFocus (BID 97443†). The entries VDB-99662, VDB-99663, VDB-99664 and VDB-99665 are related to this item.

Productinfo

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Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

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

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99282
Nessus Name: KB4015219: Windows 10 Version 1511 April 2017 Cumulative Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800218
OpenVAS Name: Microsoft Windows Multiple Vulnerabilities (KB4015583)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

09/09/2016 🔍
04/11/2017 +214 days 🔍
04/11/2017 +0 days 🔍
04/11/2017 +0 days 🔍
04/11/2017 +0 days 🔍
04/11/2017 +0 days 🔍
04/12/2017 +1 days 🔍
04/12/2017 +0 days 🔍
11/28/2022 +2056 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: securityfocus.com⛔
Organization: Microsoft
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-0203 (🔍)
OVAL: 🔍

SecurityFocus: 97443 - Microsoft Edge CVE-2017-0203 Security Bypass Vulnerability
OSVDB: - CVE-2017-0203 - Microsoft - Edge - Security Bypass Issue
SecurityTracker: 1038234

See also: 🔍

Entryinfo

Created: 04/12/2017 08:34 PM
Updated: 11/28/2022 08:11 PM
Changes: 04/12/2017 08:34 PM (77), 09/23/2020 05:44 PM (3), 11/28/2022 08:11 PM (4)
Complete: 🔍
Cache ID: 18:983:40

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