CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.6	$5k-$25k	0.00

A vulnerability, which was classified as critical, was found in Microsoft Edge (Web Browser) (version now known). This affects some unknown processing. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 11/13/2018. The weakness was released 11/13/2018 with Tencent as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is uniquely identified as CVE-2018-8567 since 03/14/2018. 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. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/06/2023). MITRE ATT&CK project uses the attack technique T1068 for this issue. The advisory points out:

An elevation of privilege vulnerability exists when Microsoft Edge does not properly enforce cross-domain policies, which could allow an attacker to access information from one domain and inject it into another domain.

The vulnerability scanner Nessus provides a plugin with the ID 118912 (KB4465664 BitLocker Security Feature Bypass Vulnerability), 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 91479 (Microsoft Edge Security Update for November 2018).

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 vulnerability database at Tenable (118912). Entries connected to this vulnerability are available at 126703, 126704, 126705 and 126706.

Productinfo

Type

• Web Browser

Vendor

• Microsoft

Name

• Edge

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

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

Vendor Base Score (Microsoft): 5.4
Vendor Vector (Microsoft): 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 118912
Nessus Name: KB4465664 BitLocker Security Feature Bypass Vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

03/14/2018 🔍
11/13/2018 +244 days 🔍
11/13/2018 +0 days 🔍
11/13/2018 +0 days 🔍
11/13/2018 +0 days 🔍
11/13/2018 +0 days 🔍
11/13/2018 +0 days 🔍
11/14/2018 +1 days 🔍
06/06/2023 +1665 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Organization: Tencent
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8567 (🔍)
OVAL: 🔍

SecurityTracker: 1042107
SecurityFocus: 105784 - Microsoft Edge CVE-2018-8567 Remote Privilege Escalation Vulnerability

See also: 🔍

Entryinfo

Created: 11/14/2018 09:45
Updated: 06/06/2023 08:39
Changes: 11/14/2018 09:45 (83), 04/12/2020 10:22 (6), 06/06/2023 08:39 (5)
Complete: 🔍

Discussion

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