Google Chrome prior 66.0.3359.106 File Download Page.downloadBehavior HTML Page unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Google Chrome. The affected element is an unknown function of the file Page.downloadBehavior of the component File Download Handler. Such manipulation as part of HTML Page leads to unrestricted upload. This vulnerability is documented as CVE-2018-6152. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Chrome (Web Browser). Affected by this issue is an unknown code block of the file Page.downloadBehavior of the component File Download Handler. The manipulation as part of a HTML Page leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The implementation of the Page.downloadBehavior backend unconditionally marked downloaded files as safe, regardless of file type in Google Chrome prior to 66.0.3359.106 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted HTML page and user interaction.

The bug was discovered 07/24/2018. The weakness was released 12/04/2018 by Natalie Silvanovich with UC Berkeley (Website). The advisory is shared for download at chromereleases.googleblog.com. This vulnerability is handled as CVE-2018-6152 since 01/23/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/13/2023). It is expected to see the exploit prices for this product increasing in the near future.The MITRE ATT&CK project declares the attack technique as T1608.002.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 111407 (FreeBSD : chromium -- multiple vulnerabilities (b9c525d9-9198-11e8-beba-080027ef1a23)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371097 (Google Chrome Prior To 68.0.3440.75 Multiple Vulnerabilities).

Upgrading to version 66.0.3359.106 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (111407) and SecurityFocus (BID 104887†). Entries connected to this vulnerability are available at VDB-115410, VDB-127476, VDB-127477 and VDB-127478. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.8

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

NVD Base Score: 9.6
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: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
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: 111407
Nessus Name: FreeBSD : chromium -- multiple vulnerabilities (b9c525d9-9198-11e8-beba-080027ef1a23)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chrome 66.0.3359.106

Timelineinfo

01/23/2018 🔍
07/24/2018 +182 days 🔍
07/24/2018 +0 days 🔍
07/27/2018 +3 days 🔍
07/30/2018 +3 days 🔍
12/04/2018 +127 days 🔍
12/04/2018 +0 days 🔍
12/05/2018 +1 days 🔍
06/13/2023 +1651 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: RHSA-2018:2282
Researcher: Natalie Silvanovich
Organization: UC Berkeley
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-6152 (🔍)
GCVE (CVE): GCVE-0-2018-6152
GCVE (VulDB): GCVE-100-127496

OVAL: 🔍

SecurityFocus: 104887 - Google Chrome Prior to 68.0.3440.75 Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/05/2018 08:25
Updated: 06/13/2023 08:11
Changes: 12/05/2018 08:25 (80), 04/17/2020 14:47 (6), 06/13/2023 08:11 (4)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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