WebKitGTK/WPE WebKit up to 2.34.0 VFS Syscall BubblewrapLauncher.cpp sandbox

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in WebKitGTK and WPE WebKit up to 2.34.0. This vulnerability affects unknown code of the file BubblewrapLauncher.cpp of the component VFS Syscall Handler. Such manipulation leads to sandbox. This vulnerability is traded as CVE-2021-42762. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in WebKitGTK and WPE WebKit up to 2.34.0 (Web Browser) and classified as critical. Affected by this issue is an unknown functionality of the file BubblewrapLauncher.cpp of the component VFS Syscall Handler. The manipulation with an unknown input leads to a sandbox vulnerability. Using CWE to declare the problem leads to CWE-265. Impacted is confidentiality, integrity, and availability.

The weakness was shared 10/21/2021 as GHSA-67h7-w3jq-vh4q. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-42762 since 10/20/2021. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1611.

The vulnerability scanner Nessus provides a plugin with the ID 241427 (RHEL 7 : webkitgtk4 (RHSA-2025:10364)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.34.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (241427). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Sandbox
CWE: CWE-265 / CWE-264
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: 241427
Nessus Name: RHEL 7 : webkitgtk4 (RHSA-2025:10364)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: WebKitGTK/WPE WebKit 2.34.1

Timelineinfo

10/20/2021 🔍
10/21/2021 +1 days 🔍
10/21/2021 +0 days 🔍
07/10/2025 +1358 days 🔍

Sourcesinfo

Advisory: GHSA-67h7-w3jq-vh4q
Status: Confirmed

CVE: CVE-2021-42762 (🔍)
GCVE (CVE): GCVE-0-2021-42762
GCVE (VulDB): GCVE-100-185144

Entryinfo

Created: 10/21/2021 04:30
Updated: 07/10/2025 20:36
Changes: 10/21/2021 04:30 (41), 10/28/2021 08:11 (1), 07/10/2025 20:36 (16)
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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