Google Chrome prior 84.0.4147.125 Audio 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
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7.2$5k-$25k0.00

A vulnerability, which was classified as critical, has been found in Google Chrome (Web Browser). Affected by this issue is an unknown code of the component Audio. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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

The weakness was presented 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 is handled as CVE-2020-6545. 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 08/17/2020). It is expected to see the exploit prices for this product increasing in the near future.

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

us-cert.cisa.gov is providing further details. See 159965, 159966, 159967 and 159969 for similar entries.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
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
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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 🔍
11/10/2020 +85 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

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

CVE: CVE-2020-6545 (🔍)
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 08/17/2020 21:31
Updated: 11/10/2020 08:05
Changes: 08/17/2020 21:31 (45), 08/17/2020 21:36 (17), 11/10/2020 08:05 (1)
Complete: 🔍

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