Horizon Alert
Summary of the vulnerability and why it matters
The CronMaster application contains a weakness in its session validation middleware. This flaw allows unauthenticated requests to bypass security checks when the session validation process fails. Consequently, unauthorized individuals could gain access to protected areas of the application and execute sensitive actions.
- Vulnerable component: CronMaster middleware
- Core weakness: Authentication bypass on session validation failure
- Main business impact: Unauthorized access and action execution
Attack Path
How an attacker could exploit the issue
An authentication bypass vulnerability exists in Cr*nMaster, a cronjob management user interface. When the middleware's session-validation fetch fails, unauthenticated requests with an invalid session cookie are treated as authenticated. This allows attackers to access protected pages and execute privileged Next.js Server Actions without proper authorization.
- Exposed to the network.
- Unauthenticated attacker gains access.
- Unauthorized actions and data access.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability in Cr*nMaster could allow an attacker to bypass authentication and gain unauthorized access to protected pages or execute privileged actions. The potential for unauthorized access and execution of actions poses a significant risk to the integrity and availability of systems managed by Cr*nMaster. Organizations using affected versions of Cr*nMaster should consider addressing this issue promptly to mitigate potential business impact.
- Attackers with low skill level.
- No access or conditions required.
- High business risk or urgency.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
An authentication bypass vulnerability in CronMaster, prior to version 2.2.0, allows unauthenticated requests to be treated as authenticated when session validation fails. This could lead to unauthorized access to protected pages and the execution of privileged server actions. The vendor has released version 2.2.0, which addresses this issue.
- Identify CronMaster installations.
- Restrict network access to CronMaster.
- Update to version 2.2.0.
- Validate update success.
- Monitor for related anomalies.
