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Vinchin Backup And Recovery 7.2 Command Injection

Vinchin Backup And Recovery 7.2 Command Injection
Posted Mar 14, 2024
Authored by Valentin Lobstein

Vinchin Backup and Recovery versions 7.2 and below suffer from an authentication command injection vulnerability.

tags | exploit
advisories | CVE-2024-25228
SHA-256 | dd0fc3f58917682d94f66913e102128d1a5e1eb10e34fa851b9f47a77fc06b74

Vinchin Backup And Recovery 7.2 Command Injection

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CVE ID: CVE-2024-25228

Title: Authenticated Command Injection Vulnerability in ManoeuvreHandler.class.php of Vinchin Backup & Recovery Versions 7.2 and Earlier

Description:
A critical security vulnerability has been discovered in the `getVerifydiyResult` function within the `ManoeuvreHandler.class.php` file of Vinchin Backup & Recovery software, affecting versions 7.2 and earlier. This function, intended for validating IP addresses or web resources, is vulnerable to authenticated command injection due to insufficient input validation and sanitization.

Function Analysis:
- The function accepts an input array `$params`, focusing on the `type` and `value` keys.
- Based on the `type`, it attempts to validate the input using either `verifyPing` (for IP addresses) or `verifyWeb` (for web resources).
- The vulnerability specifically lies in the `verifyPing` method, where the `exec` function is used to execute a `ping` command with the user-supplied `value`, without proper validation or sanitization.

Exploitation Risk:
Authenticated attackers can exploit this vulnerability by injecting malicious commands into the `value` parameter. When processed by the vulnerable function, these commands can be executed on the server, leading to unauthorized access or control.

Current Status:
As of the latest available information, no patch has been released for this vulnerability in versions 7.2 and earlier of Vinchin Backup & Recovery. The vendor has not acknowledged the vulnerability.

Recommendation:
Users are advised to apply strict access controls to mitigate the risk posed by this vulnerability until an official patch is released. Monitoring for any updates from Vinchin regarding this issue is also recommended.

Discoverer: Valentin Lobstein

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