CVE-2021-42338
9.8 · CRITICALOverview
CVE-2021-42338 is a critical-severity vulnerability affecting 4mosan gcb_doctor. It was published on November 19, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
4MOSAn GCB Doctor’s login page has improper validation of Cookie, which allows an unauthenticated remote attacker to bypass authentication by code injection in cookie, and arbitrarily manipulate the system or interrupt services by upload and execution of arbitrary files.
Remediation
Check the references section for vendor advisories and patches from 4mosan. Update gcb_doctor 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 |
|---|---|---|---|
| 4mosan | gcb_doctor | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-42338?
CVE-2021-42338 is a critical-severity vulnerability affecting 4mosan gcb_doctor. It was published on November 19, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2021-42338?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-42338?
Check the references section for vendor advisories and patches from 4mosan. Update gcb_doctor 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-2021-42338?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-42338 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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