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CVE-2023-7102 is a critical remote code execution vulnerability affecting Barracuda Email Security Gateway appliances. The flaw was introduced through the third-party Spreadsheet::ParseExcel library used by the Amavis virus-scanning component in Barracuda ESG. Barracuda described the issue as parameter injection caused by vulnerable third-party logic. A remote attacker can exploit the flaw by sending a specially crafted Excel file as an email attachment, causing the attachment-scanning workflow to process attacker-controlled input and execute arbitrary code on the appliance. Affected versions span Barracuda ESG releases from 5.1.3.001 through 9.2.1.001 until the vulnerable logic was removed.
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A vulnerability in the Spreadsheet::ParseExcel library exploited via malicious Excel attachments as a follow-on vector in Barracuda ESG campaigns to re-establish persistence by reinstalling updated malware after remediation.
A vulnerability in the Spreadsheet::ParseExcel library exploited via malicious Excel attachments as a follow-on vector in Barracuda ESG campaigns to re-establish access by reinstalling updated malware variants.
A vulnerability in the Spreadsheet::ParseExcel library leveraged via malicious Excel attachments as follow-on exploitation to re-establish access and reinstall updated malware variants in the Barracuda ESG intrusion set.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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