VDB-176454 · CVE-2021-30543 · GCVE-0-2021-30543

Google Chrome prior 91.0.4472.77 Tab Strip use after free

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.
4.8	$5k-$25k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Google Chrome. This vulnerability affects unknown code of the component Tab Strip. The manipulation results in use after free. This vulnerability is cataloged as CVE-2021-30543. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Google Chrome (Web Browser). Affected is an unknown code block of the component Tab Strip. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 06/08/2021. The advisory is available at crbug.com. This vulnerability is traded as CVE-2021-30543. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 06/10/2021). It is expected to see the exploit prices for this product increasing in the near future.

Upgrading to version 91.0.4472.77 eliminates this vulnerability. The upgrade is hosted for download at chromereleases.googleblog.com.

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Productinfo

Type

Web Browser

Vendor

Google

Name

Chrome

License

free

Website

Vendor: https://www.google.com/
Product: https://www.google.com/chrome/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chrome 91.0.4472.77

Timelineinfo

04/13/2021 🔍
06/08/2021 +56 days 🔍
06/08/2021 +0 days 🔍
06/10/2021 +2 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: crbug.com
Status: Confirmed

CVE: CVE-2021-30543 (🔍)
GCVE (CVE): GCVE-0-2021-30543
GCVE (VulDB): GCVE-100-176454

Entryinfo

Created: 06/08/2021 08:20
Updated: 06/10/2021 15:00
Changes: 06/08/2021 08:20 (41), 06/10/2021 15:00 (5)
Complete: 🔍
Cache ID: 216::103