CVE-2021-47812

Summary

GravCMS 1.10.7 contains an unauthenticated vulnerability that allows remote attackers to write arbitrary YAML configuration and execute PHP code through the scheduler endpoint. Attackers can exploit the admin-nonce parameter to inject base64-encoded payloads and create malicious custom jobs with system command execution.

Affected Software

Weaknesses

• CWE-862: Missing Authorization

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: total

Additional References

• https://www.exploit-db.com/exploits/49973

References

• https://www.exploit-db.com/exploits/49973
• https://getgrav.org
• https://www.vulncheck.com/advisories/gravcms-arbitrary-yaml-writeupdate-unauthenticated

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