CVE-2021-42762
5.3 · MEDIUMOverview
CVE-2021-42762 is a medium-severity vulnerability affecting webkitgtk webkitgtk. It was published on October 20, 2021 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limited sandbox bypass that allows a sandboxed process to trick host processes into thinking the sandboxed process is not confined by the sandbox, by abusing VFS syscalls that manipulate its filesystem namespace. The impact is limited to host services that create UNIX sockets that WebKit mounts inside its sandbox, and the sandboxed process remains otherwise confined. NOTE: this is similar to CVE-2021-41133.
Remediation
Check the references section for vendor advisories and patches from webkitgtk. Update webkitgtk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| webkitgtk | webkitgtk | >= 0, < 2.34.1 | Affected |
| wpewebkit | wpe_webkit | >= 0, < 2.34.1 | Affected |
References
Frequently Asked Questions
What is CVE-2021-42762?
CVE-2021-42762 is a medium-severity vulnerability affecting webkitgtk webkitgtk. It was published on October 20, 2021 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2021-42762?
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-42762?
Check the references section for vendor advisories and patches from webkitgtk. Update webkitgtk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-42762?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-42762 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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