SB2023122712 - Remote code execution in Barracuda Email Security Gateway Appliance (ESG)
Published: December 27, 2023
Security Bulletin ID
SB2023122712
Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Exposed dangerous method or function (CVE-ID: CVE-2023-7102)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper input validation within the third-party Perl library Spreadsheet::ParseExcel used to parse Excel files. A remote attacker can send a specially crafted email with a malicious file inside and execute arbitrary code on the device.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.
References
- https://www.barracuda.com/company/legal/esg-vulnerability
- https://www.cve.org/CVERecord?id=CVE-2023-7101
- https://metacpan.org/dist/Spreadsheet-ParseExcel
- https://github.com/haile01/perl_spreadsheet_excel_rce_poc
- https://github.com/jmcnamara/spreadsheet-parseexcel/blob/c7298592e102a375d43150cd002feed806557c15/lib/Spreadsheet/ParseExcel/Utility.pm#L171
- https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2023/MNDT-2023-0019.md