Google Chrome up to 84.0.4147.105 Offline-Mode 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 (≈)
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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.
7.4$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Google Chrome. This vulnerability affects unknown code of the component Offline-Mode. Executing a manipulation can lead to use after free. This vulnerability is handled as CVE-2020-6553. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Google Chrome (Web Browser). This vulnerability affects an unknown code block of the component Offline-Mode. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Use after free in offline mode in Google Chrome on iOS prior to 84.0.4147.125 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

The weakness was released 08/10/2020 as Stable Channel Update for Desktop - August 2020 (Website). The advisory is shared for download at chromereleases.googleblog.com. The advisory contains:

This update includes 15 security fixes.
This vulnerability was named CVE-2020-6553. 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 current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/14/2024). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 208603 (CentOS 6 : chromium-browser (RHSA-2020:3560)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 84.0.4147.125 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (208603). Additional details are provided at us-cert.cisa.gov. Entries connected to this vulnerability are available at VDB-159965, VDB-159966, VDB-159967 and VDB-159968. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

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

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Nessus ID: 208603
Nessus Name: CentOS 6 : chromium-browser (RHSA-2020:3560)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Chrome 84.0.4147.125

Timelineinfo

01/08/2020 🔍
08/10/2020 +215 days 🔍
08/10/2020 +0 days 🔍
08/17/2020 +7 days 🔍
05/05/2025 +1722 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: Stable Channel Update for Desktop - August 2020
Status: Confirmed

CVE: CVE-2020-6553 (🔍)
GCVE (CVE): GCVE-0-2020-6553
GCVE (VulDB): GCVE-100-159976
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 08/17/2020 21:33
Updated: 05/05/2025 05:18
Changes: 08/17/2020 21:33 (45), 08/17/2020 21:38 (17), 11/10/2020 08:56 (1), 10/14/2024 11:23 (19), 05/05/2025 05:18 (3)
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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