uBlock Origin/nMatrix of memory allocation

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in uBlock Origin and nMatrix. This impacts an unknown function of the component Block Handler. The manipulation of the argument of leads to memory allocation. This vulnerability is uniquely identified as CVE-2021-36773. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in uBlock Origin and nMatrix (the affected version is unknown). It has been rated as problematic. This issue affects an unknown code of the component Block Handler. The manipulation of the argument of with an unknown input leads to a memory allocation vulnerability. Using CWE to declare the problem leads to CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. Impacted is availability.

The weakness was disclosed 07/18/2021. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2021-36773. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading eliminates this vulnerability.

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Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: 🔍

0-Day Time: 🔍

Timelineinfo

07/18/2021 🔍
07/18/2021 +0 days 🔍
07/18/2021 +0 days 🔍
07/22/2021 +4 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2021-36773 (🔍)
GCVE (CVE): GCVE-0-2021-36773
GCVE (VulDB): GCVE-100-178847

Entryinfo

Created: 07/18/2021 09:01
Updated: 07/22/2021 07:49
Changes: 07/18/2021 09:01 (36), 07/22/2021 07:49 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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