SQL Injection Vulnerabilities

Unveiling The Zero-Day Vulnerability: MOVEit Transfer’s Security Under Scrutiny

MOVEit Transfer, a popular secure file transfer web application, has recently come under scrutiny due to the discovery of a zero-day vulnerability known as CVE-2023-34362.

On May 31, Progress Software issued a security advisory disclosing the existence of this vulnerability.

Recently, the cybersecurity firm Huntress has conducted an in-depth analysis, recreating the entire attack associated with MOVEit Transfer and shedding light on the various phases involved.

Furthermore, there has been progress in identifying the threat actor responsible for the exploitation. Previously, the group behind these attacks remained unknown.

Group Identification

Microsoft has attributed this threat to a group called “Lace Tempest” based on their new naming scheme.

The same group was previously associated with the cl0p ransomware gang, which targeted another file transfer software, GoAnywhere MFT.

The attribution aligns with the conclusions drawn by various entities within the threat intelligence community.

The severity of the Vulnerability

The identified vulnerability in the MOVEit Transfer web application frontend allows for SQL injection, enabling attackers to gain administrative access, exfiltrate files, and execute arbitrary code.

Of utmost concern is the fact that the exploit grants an unauthenticated adversary the ability to trigger ransomware deployment or any other malicious activity.

By running under the MOVEit service account user “moveitsvc,” which is part of the local administrators group, the attacker can disable antivirus protections and execute arbitrary code.

Attack Chain Analysis

Huntress conducted a thorough investigation of the attack chain employed by the threat actors. The analysis revealed several key steps:

Initial Exploitation

The attack commences with SQL injection, opening the door for further compromise, including arbitrary code execution.

Arbitrary Code Execution

Exploiting the SQL injection vulnerability allows the attacker to execute arbitrary code, effectively taking control of the system.

Creation of human2.aspx Webshell

While not necessary for compromising the MOVEit Transfer software, the attackers deployed a human2.aspx webshell for persistence. However, according to Huntress, ransomware can be detonated without deploying this webshell.

Recommended Actions

Given the severity of the vulnerability, organizations using MOVEit Transfer software are strongly advised to take the following steps:

  1. Patching: Apply the security patch released by Progress promptly. Based on Huntress’ testing, the patch effectively mitigates the recreated exploit.
  2. Logging: Enable comprehensive logging within the MOVEit Transfer application to aid in monitoring and detection of any suspicious activities.
  3. Antivirus Protection: Ensure that antivirus protections are in place and regularly updated. Additionally, consider implementing additional security measures such as intrusion detection and prevention systems.

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