Unauthenticated Remote Code Execution in GravCMS by Grav
CVE-2021-47812
9.3CRITICAL
Key Information:
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2021-47812?
GravCMS version 1.10.7 is vulnerable to an unauthenticated flaw that enables remote attackers to exploit the scheduler endpoint. By manipulating the admin-nonce parameter, attackers can inject base64-encoded payloads to create malicious custom jobs. This compromise permits the execution of arbitrary PHP code on the server, potentially leading to unauthorized access and control over the system's operations.
Affected Version(s)
GravCMS 1.10.7
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
CVSS V4
Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved
Credit
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