VDB-112864 · CVE-2018-6654 · Qualys 370775

Grammarly Extension on Chrome Request access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Grammarly Extension on Chrome. This issue affects some unknown processing. Executing a manipulation as part of Request can lead to access control. The identification of this vulnerability is CVE-2018-6654. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Grammarly Extension on Chrome (the affected version unknown) and classified as problematic. This vulnerability affects an unknown part. The manipulation as part of a Request leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality. CVE summarizes:

The Grammarly extension before 2018-02-02 for Chrome allows remote attackers to discover authentication tokens via an 'action: "user"' request to iframe.gr_-ifr, because the exposure of these tokens is not restricted to any specific web site.

The bug was discovered 02/02/2018. The weakness was shared 02/06/2018 (Website). The advisory is shared for download at bugs.chromium.org. This vulnerability was named CVE-2018-6654 since 02/05/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 370775 (Grammarly Google Chrome and Mozilla Firefox Browser Extension auth tokens are accessible to all websites).

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

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

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 8.8
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: Access control
CWE: 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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OpenVAS ID: 855191
OpenVAS Name: Grammarly Extension For Google Chrome Information Disclosure Vulnerability - Mac OS X
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/02/2018 🔍
02/02/2018 +0 days 🔍
02/05/2018 +3 days 🔍
02/05/2018 +0 days 🔍
02/06/2018 +1 days 🔍
02/06/2018 +0 days 🔍
01/01/2020 +694 days 🔍

Sourcesinfo

Advisory: bugs.chromium.org
Status: Not defined

CVE: CVE-2018-6654 (🔍)
GCVE (CVE): GCVE-0-2018-6654
GCVE (VulDB): GCVE-100-112864

Entryinfo

Created: 02/06/2018 18:56
Updated: 01/01/2020 20:35
Changes: 02/06/2018 18:56 (62), 01/01/2020 20:35 (1)
Complete: 🔍
Cache ID: 216::103

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