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How the CVE Works
The vulnerability in Libraesva ESG resides in its handling of compressed email attachments. The application inadequately sanitizes the filenames or paths of extracted archive contents. An attacker can craft a malicious compressed file containing an attachment with a specially crafted filename that includes shell metacharacters or command sequences. When the ESG processes this attachment, the unsanitized filename is passed to a system shell command, likely during the virus scanning or content analysis phase. This allows the attacker to break out of the intended command and execute arbitrary operating system commands on the underlying server with the privileges of the application service. The network vector and low attack complexity make this exploitable via a simple phishing email.
DailyCVE Form
Platform: Libraesva ESG
Version: 4.5 – 5.5.6
Vulnerability: Command Injection
Severity: Medium
Date: 2024-05-15
Prediction: Patch Available
What Undercode Say:
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`find /opt/libraesva -name “.sh” -exec grep -l “system\\|popen\\|exec” {} \;`
`strings /opt/libraesva/bin/esg | grep -i “unzip\\|tar\\|scan”`
`ps aux | grep libraesva`
How Exploit:
Craft malicious ZIP.
Email as attachment.
Trigger archive extraction.
Execute arbitrary commands.
Protection from this CVE
Apply vendor patch.
Sanitize filenames.
Use command allow-listing.
Restrict server permissions.
Impact:
Arbitrary command execution.
System compromise.
Data breach.
Unauthorized access.
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Sources:
Reported By: www.cve.org
Extra Source Hub:
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