CVE-2021-42013 Ransomware

CISA description

Apache HTTP Server contains a path traversal vulnerability that allows an attacker to perform remote code execution if files outside directories configured by Alias-like directives are not under default require all denied or if CGI scripts are enabled. This CVE ID resolves an incomplete patch for CVE-2021-41773.

Required action

Apply updates per vendor instructions.

Notes & references

• https://nvd.nist.gov/vuln/detail/CVE-2021-42013

Where this lands in 800-53

Vulnerability data triggers these controls during assessment and continuous monitoring.

• RA-5 · Vulnerability Monitoring and Scanning
• SI-2 · Flaw Remediation
• CM-6 · Configuration Settings
• SI-7 · Software, Firmware, and Information Integrity
• CM-8 · System Component Inventory

External lookups

• NVD · CVE-2021-42013
• CVE.org · CVE-2021-42013
• CISA KEV catalog (canonical)