Microsoft Edge CSP 7pk security

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$5k-$25k0.00

A vulnerability was found in Microsoft Edge (Web Browser) (version unknown). It has been declared as critical. Affected by this vulnerability is an unknown function of the component CSP. The manipulation with an unknown input leads to a 7pk security vulnerability. The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect integrity. The summary by CVE is:

Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an attacker to trick a user into loading a page with malicious content when the Edge Content Security Policy (CSP) fails to properly validate certain specially crafted documents, aka "Microsoft Edge Security Feature Bypass Vulnerability".

The bug was discovered 07/11/2017. The weakness was presented 07/11/2017 as KB4025338 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. This vulnerability is known as CVE-2017-8599 since 05/03/2017. 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. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/12/2022). MITRE ATT&CK project uses the attack technique T1211 for this issue. The advisory points out:

A security feature bypass vulnerability exists when Microsoft Edge fails to correctly apply Same Origin Policy for HTML elements present in other browser windows. An attacker could use this vulnerability to trick a user into loading a page with malicious content.

The vulnerability scanner Nessus provides a plugin with the ID 101366 (KB4025339: Windows 10 Version 1607 and Windows Server 2016 July 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 91394 (Microsoft Edge Security Update for July 2017).

Applying the patch KB4025338 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 (101366) and SecurityFocus (BID 99393†). See VDB-103402, VDB-103431, VDB-103432 and VDB-103435 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 6.5
Vendor Vector (Microsoft): 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
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: 101366
Nessus Name: KB4025339: Windows 10 Version 1607 and Windows Server 2016 July 2017 Cumulative Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilites (KB4025344)
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: 🔍

Patch: KB4025338

Timelineinfo

05/03/2017 🔍
07/11/2017 +69 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/11/2017 +0 days 🔍
07/12/2017 +1 days 🔍
12/12/2022 +1979 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: KB4025338
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8599 (🔍)
OVAL: 🔍

SecurityFocus: 99393 - Microsoft Edge CVE-2017-8599 Security Bypass Vulnerability
SecurityTracker: 1038858

See also: 🔍

Entryinfo

Created: 07/12/2017 10:47 AM
Updated: 12/12/2022 10:06 AM
Changes: 07/12/2017 10:47 AM (89), 10/25/2019 07:23 AM (4), 12/12/2022 10:06 AM (4)
Complete: 🔍
Cache ID: 18:451:40

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