Microsoft Edge input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.9$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Microsoft Edge. The affected element is an unknown function. Such manipulation leads to input validation. This vulnerability is documented as CVE-2018-8383. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Edge (Web Browser) (unknown version). It has been rated as critical. Affected by this issue is an unknown code block. 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:

A spoofing vulnerability exists when Microsoft Edge does not properly parse HTTP content, aka "Microsoft Edge Spoofing Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8388.

The bug was discovered 08/14/2018. The weakness was released 08/14/2018 by Kryptos Logic (window) with Kryptos Logic as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release was coordinated with the vendor. This vulnerability is handled as CVE-2018-8383 since 03/14/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/02/2023). The advisory points out:

A spoofing vulnerability exists when Microsoft Edge does not properly parse HTTP content. An attacker who successfully exploited this vulnerability could trick a user by redirecting the user to a specially crafted website. The specially crafted website could either spoof content or serve as a pivot to chain an attack with other vulnerabilities in web services.

The vulnerability scanner Nessus provides a plugin with the ID 111692 (KB4343909: Windows 10 Version 1803 and Windows Server Version 1803 August 2018 Security Update (Foreshadow)), 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 91464 (Microsoft Edge Security Update for August 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 databases at Tenable (111692) and SecurityFocus (BID 105024†). Entries connected to this vulnerability are available at VDB-122827, VDB-122830, VDB-122831 and VDB-122840. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

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

Vendor Base Score (Microsoft): 4.3
Vendor Vector (Microsoft): 🔍

NVD Base Score: 4.3
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: Input validation
CWE: CWE-20
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: 111692
Nessus Name: KB4343909: Windows 10 Version 1803 and Windows Server Version 1803 August 2018 Security Update (Foreshadow)
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 🔍
08/14/2018 +152 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/15/2018 +0 days 🔍
05/02/2023 +1721 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Kryptos Logic (window)
Organization: Kryptos Logic
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8383 (🔍)
GCVE (CVE): GCVE-0-2018-8383
GCVE (VulDB): GCVE-100-122876

OVAL: 🔍

SecurityFocus: 105024 - Microsoft Edge CVE-2018-8383 Spoofing Vulnerability
SecurityTracker: 1041457

See also: 🔍

Entryinfo

Created: 08/14/2018 21:52
Updated: 05/02/2023 08:12
Changes: 08/14/2018 21:52 (84), 03/15/2020 15:41 (8), 05/02/2023 08:12 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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